Stephen Kolek Stats: Statcast, Visuals & Advanced Metrics

P | Kansas City Royals

Bats/Throws: R/R | 6' 3" 210 lbs | Age: 29

Draft: 2018 | Rd. 11, No. 344, Los Angeles Dodgers | Texas A&M

	W	L	ERA	G	GS	IP	SO	WHIP
2024	3	0	5.21	42	0	46.2	39	1.52
2025	5	7	3.51	19	19	112.2	77	1.14
2026	3	1	3.32	6	6	38	27	0.97
3 Seasons	11	8	3.88	67	25	197.1	143	1.20

	G	W-L	ERA	IP	SO	WHIP
2024	42	3-0	5.21	46.2	39	1.52
2025	19	5-7	3.51	112.2	77	1.14
2026	6	3-1	3.32	38	27	0.97
3 Seasons	67	11-8	3.88	197.1	143	1.20

Player Apps

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Pitch Usage

Statcast Standard Splits Game Logs

Standard MLB Batting Statistics

No MLB Hitting Statistics.

Standard MLB Pitching Statistics

Season	Tm	LG	BF	W	L	ERA	G	GS	IP	H	R	ER	HR	BB	SO	WHIP
2024	SD	NL	211	3	0	5.21	42	0	46.2	59	30	27	4	12	39	1.52
2025	SD	NL	336	4	5	4.18	14	14	79.2	78	40	37	8	26	56	1.31
2025	KC	AL	125	1	2	1.91	5	5	33.0	20	9	7	1	5	21	0.76
2025	2 Teams		461	5	7	3.51	19	19	112.2	98	49	44	9	31	77	1.14
2026	KC	AL	149	3	1	3.32	6	6	38.0	29	16	14	5	8	27	0.97
3 Seasons	2 Teams		821	11	8	3.88	67	25	197.1	186	95	85	18	51	143	1.20

*: All Star Season, Rankings AL/NL: Top 5 10 15 20, Click for Chart.

Standard MLB Fielding Statistics

Season	Tm	LG	POS	G	GS	INN	TC	PO	A	E	FPCT%
2024	SD	NL	P	42	0	46.2	9	1	8	0	1.000
2025	SD	NL	P	14	14	79.2	9	4	4	1	.889
2025	KC	AL	P	5	5	33.0	5	3	1	1	.800
2025	2 Teams		P	19	19	112.2	14	7	5	2	.857
2026	KC	AL	P	6	6	38.0	7	7	0	0	1.000
3 Seasons	2 Teams		P	67	25	197.1	30	15	13	2	.933

Standard Minor League Batting Statistics

No Minor League Hitting Statistics.

Standard Minor League Pitching Statistics

Season	Tm	LG	L	W	L	ERA	G	GS	SV	IP	H	R	ER	HR	BB	SO	WHIP
2018	2 Teams		Minors	2	0	1.42	17	0	3	31.2	22	5	5	1	7	30	0.92
2018	Ogden Raptors	PIO	ROK	0	0	6.23	3	0	1	4.1	6	3	3	1	1	3	1.62
2018	Great Lakes Loons	MID	A(Full)	2	0	0.66	14	0	2	27.1	16	2	2	0	6	27	0.80
2019	Great Lakes Loons	MID	A(Full)	7	8	5.00	27	25	0	131.1	143	87	73	7	48	109	1.45
2021	3 Teams		Minors	4	3	6.03	24	9	0	59.2	61	43	40	7	25	67	1.44
2021	Modesto Nuts	A W	A	1	0	6.00	2	0	0	3.0	3	2	2	0	2	0	1.67
2021	Everett AquaSox	A+ W	A+	3	3	5.93	21	9	0	54.2	55	38	36	7	20	66	1.37
2021	Arkansas Travelers	AA C	AA	0	0	9.00	1	0	0	2.0	3	3	2	0	3	1	3.00
2022	Arkansas Travelers	TEX	AA	6	13	4.51	27	27	0	143.2	140	79	72	10	66	138	1.43
2023	2 Teams		Minors	6	2	3.76	49	1	4	69.1	52	34	29	3	32	76	1.21
2023	Arkansas Travelers	TEX	AA	2	0	0.00	5	0	0	7.2	1	0	0	0	2	11	0.39
2023	Tacoma Rainiers	PCL	AAA	4	2	4.23	44	1	4	61.2	51	34	29	3	30	65	1.31
2025	2 Teams		Minors	2	3	6.26	11	11	0	46.0	68	34	32	6	15	41	1.80
2025	El Paso Chihuahuas	PCL	AAA	1	0	6.00	6	6	0	27.0	38	19	18	4	5	21	1.59
2025	Omaha Storm Chasers	INT	AAA	1	3	6.63	5	5	0	19.0	30	15	14	2	10	20	2.11
2025	2 Teams		AAA	2	3	6.26	11	11	0	46.0	68	34	32	6	15	41	1.80
2026	Omaha Storm Chasers	INT	AAA	0	1	2.76	4	4	0	16.1	19	7	5	1	4	14	1.41
	Ogden Raptors	PIO	ROK	0	0	6.23	3	0	1	4.1	6	3	3	1	1	3	1.62
	3 Teams		AAA	6	6	4.79	59	16	4	124.0	138	75	66	10	49	120	1.51
	Arkansas Travelers	TEX	AA	8	13	4.34	33	27	0	153.1	144	82	74	10	71	150	1.40
	Everett AquaSox	NWL	A+	3	3	5.93	21	9	0	54.2	55	38	36	7	20	66	1.37
	2 Teams		A	10	8	4.29	43	25	2	161.2	162	91	77	7	56	136	1.35
Career Minors	8 Teams			27	30	4.63	159	77	7	498.0	505	289	256	35	197	475	1.41

Standard Minor League Fielding Statistics

Season	Tm	LG	L	POS	G	GS	INN	TC	PO	A	E	DP	FPCT%
2018	2 Teams		Minors	P	17	0	31.2	4	0	4	0	1	1.000
2018	Ogden Raptors	PIO	ROK	P	3	0	4.1	0	0	0	0	0	.000
2018	Great Lakes Loons	MID	A(Full)	P	14	0	27.1	4	0	4	0	1	1.000
2019	Great Lakes Loons	MID	A(Full)	P	27	25	131.1	25	2	19	4	1	.840
2021	3 Teams		Minors	P	24	9	59.2	7	1	6	0	0	1.000
2021	Modesto Nuts	A W	A	P	2	0	3.0	2	0	2	0	0	1.000
2021	Everett AquaSox	A+ W	A+	P	21	9	54.2	5	1	4	0	0	1.000
2021	Arkansas Travelers	AA C	AA	P	1	0	2.0	0	0	0	0	0	.000
2022	Arkansas Travelers	TEX	AA	P	27	27	143.2	12	5	7	0	2	1.000
2023	2 Teams		Minors	P	49	1	69.1	14	2	10	2	1	.857
2023	Arkansas Travelers	TEX	AA	P	5	0	7.2	2	0	1	1	0	.500
2023	Tacoma Rainiers	PCL	AAA	P	44	1	61.2	12	2	9	1	1	.917
2025	2 Teams		Minors	P	11	11	46.0	11	6	5	0	0	1.000
2025	El Paso Chihuahuas	PCL	AAA	P	6	6	27.0	7	4	3	0	0	1.000
2025	Omaha Storm Chasers	INT	AAA	P	5	5	19.0	4	2	2	0	0	1.000
2025	2 Teams		AAA	P	11	11	46.0	11	6	5	0	0	1.000
2026	Omaha Storm Chasers	INT	AAA	P	4	4	16.1	6	3	3	0	1	1.000
	Ogden Raptors	PIO	ROK	P	3	0	4.1	0	0	0	0	0	.000
	3 Teams		AAA	P	59	16	124.0	29	11	17	1	2	.966
	Arkansas Travelers	TEX	AA	P	33	27	153.1	14	5	8	1	2	.929
	Everett AquaSox	NWL	A+	P	21	9	54.2	5	1	4	0	0	1.000
	2 Teams		A	P	43	25	161.2	31	2	25	4	2	.871
Career Minors	8 Teams			P	159	77	498.0	79	19	54	6	6	.924

Awards

TEX Pitcher of the Week

Week	Team
07/10/2022
06/05/2022

Transactions

Team	Date	Transaction
	06/04/2026	RHP Stephen Kolek roster status changed by Kansas City Royals.
	05/08/2026	Kansas City Royals recalled RHP Stephen Kolek from Omaha Storm Chasers.
	05/06/2026	Kansas City Royals optioned RHP Stephen Kolek to Omaha Storm Chasers.
	05/05/2026	Kansas City Royals activated RHP Stephen Kolek from the 15-day injured list.
	04/12/2026	Kansas City Royals sent RHP Stephen Kolek on a rehab assignment to Omaha Storm Chasers.
	04/12/2026	Kansas City Royals sent RHP Stephen Kolek on a rehab assignment to Omaha Storm Chasers.
	03/25/2026	Kansas City Royals placed RHP Stephen Kolek on the 15-day injured list retroactive to March 22, 2026. Left oblique strain.
	09/04/2025	Kansas City Royals recalled RHP Stephen Kolek from Omaha Storm Chasers.
	08/31/2025	Kansas City Royals optioned RHP Stephen Kolek to Omaha Storm Chasers.
	08/29/2025	Kansas City Royals recalled RHP Stephen Kolek from Omaha Storm Chasers.
	08/01/2025	Omaha Storm Chasers activated RHP Stephen Kolek.
	07/31/2025	Kansas City Royals traded C Freddy Fermin to San Diego Padres for RHP Ryan Bergert and RHP Stephen Kolek.
	07/31/2025	RHP Stephen Kolek assigned to Omaha Storm Chasers.
	07/29/2025	San Diego Padres optioned RHP Stephen Kolek to El Paso Chihuahuas.
	07/22/2025	San Diego Padres recalled RHP Stephen Kolek from El Paso Chihuahuas.
	07/06/2025	San Diego Padres optioned RHP Stephen Kolek to El Paso Chihuahuas.
	05/04/2025	San Diego Padres recalled RHP Stephen Kolek from El Paso Chihuahuas.
	03/25/2025	San Diego Padres optioned RHP Stephen Kolek to El Paso Chihuahuas.
	11/04/2024	San Diego Padres activated RHP Stephen Kolek from the 60-day injured list.
	09/01/2024	San Diego Padres transferred RHP Stephen Kolek from the 15-day injured list to the 60-day injured list.
	07/31/2024	San Diego Padres placed RHP Stephen Kolek on the 15-day injured list.
	12/06/2023	San Diego Padres drafted RHP Stephen Kolek.
	10/19/2023	RHP Stephen Kolek assigned to Gigantes del Cibao.
	04/27/2023	RHP Stephen Kolek assigned to Tacoma Rainiers from Arkansas Travelers.
	04/06/2022	RHP Stephen Kolek and assigned to Arkansas Travelers from Everett AquaSox.
	04/06/2022	Arkansas Travelers activated RHP Stephen Kolek.
	08/05/2021	Everett AquaSox activated RHP Stephen Kolek from the temporarily inactive list.
	07/28/2021	Everett AquaSox placed RHP Stephen Kolek on the temporarily inactive list.
	06/22/2021	RHP Stephen Kolek assigned to Everett AquaSox from Arkansas Travelers.
	06/17/2021	RHP Stephen Kolek assigned to Arkansas Travelers from Everett AquaSox.
	05/10/2021	RHP Stephen Kolek assigned to Everett AquaSox from Modesto Nuts.
	04/30/2021	RHP Stephen Kolek assigned to Modesto Nuts from Everett AquaSox.
	04/28/2021	Rancho Cucamonga Quakes traded RHP Stephen Kolek to Everett AquaSox.
	02/12/2021	Rancho Cucamonga Quakes activated RHP Stephen Kolek.
	02/12/2021	Rancho Cucamonga Quakes activated RHP Stephen Kolek.
	06/13/2019	Great Lakes Loons activated RHP Stephen Kolek from the temporarily inactive list.
	06/13/2019	Great Lakes Loons activated RHP Stephen Kolek from the temporarily inactive list.
	06/09/2019	Great Lakes Loons placed RHP Stephen Kolek on the temporarily inactive list.
	05/28/2019	RHP Stephen Kolek assigned to Great Lakes Loons from Dodgers Extended Spring Training.
	05/24/2019	RHP Stephen Kolek assigned to Dodgers Extended Spring Training from Great Lakes Loons.
	04/20/2019	RHP Stephen Kolek assigned to Great Lakes Loons from Dodgers Extended Spring Training.
	04/16/2019	RHP Stephen Kolek assigned to Dodgers Extended Spring Training from Great Lakes Loons.
	07/09/2018	RHP Stephen Kolek assigned to Great Lakes Loons from Ogden Raptors.
	06/29/2018	RHP Stephen Kolek assigned to Ogden Raptors.
	06/14/2018	Los Angeles Dodgers signed RHP Stephen Kolek.
	03/03/2017	RHP Stephen Kolek assigned to Texas A&M Aggies.

Platoon Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP
Kansas City Royals	MLB	vs Left				6			23.1	90	17			2	4	19	0.90
Kansas City Royals	MLB	vs Right				6			14.2	59	12			3	4	8	1.09

Monthly Splits

Team	L	Type	W	L	ERA	G	GS	IP	BF	H	R	ER	HR	BB	SO	WHIP
Kansas City Royals	MLB	May	3	1	3.48	5	5	31.0	121	23	14	12	4	6	19	0.94
Kansas City Royals	MLB	June	0	0	2.57	1	1	7.0	28	6	2	2	1	2	8	1.14
Kansas City Royals	MLB	Pre All-Star	3	1	3.32	6	6	38.0	149	29	16	14	5	8	27	0.97

Baserunner Splits

Team	L	Type	G	IP	BF	H	HR	BB	SO	WHIP
Kansas City Royals	MLB	Bases Empty	6	24.1	97	18	1	4	14	0.90
Kansas City Royals	MLB	Bases Loaded	1	0.1	1	0	0	0	1	0.00
Kansas City Royals	MLB	Runner at 1st	6	8.2	31	6	1	3	7	1.04
Kansas City Royals	MLB	Runners at 1st & 2nd	3	0.1	4	2	2	1	0	9.00
Kansas City Royals	MLB	Runners at 1st & 3rd	3	1.1	3	0	0	0	2	0.00
Kansas City Royals	MLB	Runner at 2nd	5	1.2	7	2	1	0	1	1.20
Kansas City Royals	MLB	Runners at 2nd & 3rd	1	0.0	2	1	0	0	0	-.--
Kansas City Royals	MLB	Runner at 3rd	3	1.1	4	0	0	0	2	0.00
Kansas City Royals	MLB	Scoring Position	5	5.0	21	5	3	1	6	1.20

Game Type Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP
Kansas City Royals	MLB	Home Games	2	0	1.80	2	2	0	15.0	51	8	3	3	1	1	5	0.60
Kansas City Royals	MLB	Away Games	1	1	4.30	4	4	0	23.0	98	21	13	11	4	7	22	1.22
Kansas City Royals	MLB	Day Games	2	0	0.00	2	2	0	15.1	53	8	0	0	0	2	5	0.65
Kansas City Royals	MLB	Night Games	1	1	5.56	4	4	0	22.2	96	21	16	14	5	6	22	1.19
Kansas City Royals	MLB	Leading Off Inning				6			9.1	39	7			0	3	6	1.07
Kansas City Royals	MLB	Late / Close				1			1.0	3	0			0	0	0	0.00

Outs Splits

Team	L	Type	G	IP	BF	H	HR	BB	SO	WHIP
Kansas City Royals	MLB	No Outs	6	14.0	50	7	0	3	8	0.71
Kansas City Royals	MLB	One Out	6	12.0	48	12	3	1	9	1.08
Kansas City Royals	MLB	Two Outs	6	12.0	51	10	2	4	10	1.17

Inning Splits

Team	L	Type	ERA	G	IP	BF	H	R	ER	HR	BB	SO	WHIP
Kansas City Royals	MLB	First Inning	3.00	6	6.0	26	5	4	2	0	1	5	1.00
Kansas City Royals	MLB	Second Inning	0.00	6	6.0	21	4	0	0	0	0	4	0.67
Kansas City Royals	MLB	Third Inning	0.00	6	6.0	24	2	0	0	0	4	6	1.00
Kansas City Royals	MLB	Fourth Inning	4.50	6	6.0	23	4	3	3	1	0	3	0.67
Kansas City Royals	MLB	Fifth Inning	14.29	6	5.2	26	11	9	9	4	1	6	2.12
Kansas City Royals	MLB	Sixth Inning	0.00	4	4.0	14	1	0	0	0	1	1	0.50
Kansas City Royals	MLB	Seventh Inning	0.00	3	2.1	8	1	0	0	0	1	0	0.86
Kansas City Royals	MLB	Eighth Inning	0.00	1	1.0	4	1	0	0	0	0	1	1.00
Kansas City Royals	MLB	Ninth Inning	0.00	1	1.0	3	0	0	0	0	0	1	0.00

Platoon Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP
Omaha Storm Chasers	Triple-A	vs Left				4			8.0	35	10			0	2	6	1.50
Omaha Storm Chasers	Triple-A	vs Right				4			7.2	34	9			1	2	8	1.43

Monthly Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP
Omaha Storm Chasers	Triple-A	April	0	1	2.76	4	4	0	16.1	69	19	7	5	1	4	14	1.41
Omaha Storm Chasers	Triple-A	First Half	0	1	2.76	4	4	0	16.1	69	19	7	5	1	4	14	1.41

Baserunner Splits

Team	L	Type	G	IP	BF	H	HR	BB	SO	WHIP
Omaha Storm Chasers	Triple-A	Bases Empty	4	7.1	37	11	0	3	8	1.91
Omaha Storm Chasers	Triple-A	Bases Loaded	1	1.0	2	0	0	0	1	0.00
Omaha Storm Chasers	Triple-A	Runner at 1st	4	3.2	17	6	1	1	3	1.91
Omaha Storm Chasers	Triple-A	Runners at 1st & 2nd	3	0.2	3	1	0	0	0	1.50
Omaha Storm Chasers	Triple-A	Runners at 1st & 3rd	3	1.2	4	0	0	0	0	0.00
Omaha Storm Chasers	Triple-A	Runner at 2nd	2	1.1	5	1	0	0	2	0.75
Omaha Storm Chasers	Triple-A	Runner at 3rd	1	0.1	1	0	0	0	0	0.00
Omaha Storm Chasers	Triple-A	Scoring Position	4	5.0	15	2	0	0	3	0.40

Game Type Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP
Omaha Storm Chasers	Triple-A	Home Games	0	1	2.13	3	3	0	12.2	52	15	5	3	0	2	10	1.34
Omaha Storm Chasers	Triple-A	Away Games	0	0	4.91	1	1	0	3.2	17	4	2	2	1	2	4	1.64
Omaha Storm Chasers	Triple-A	Day Games	0	0	2.16	2	2	0	8.1	31	7	2	2	0	2	6	1.08
Omaha Storm Chasers	Triple-A	Night Games	0	1	3.38	2	2	0	8.0	38	12	5	3	1	2	8	1.75
Omaha Storm Chasers	Triple-A	Leading Off Inning				4			3.0	18	6			0	2	4	2.67

Outs Splits

Team	L	Type	G	IP	BF	H	HR	BB	SO	WHIP
Omaha Storm Chasers	Triple-A	No Outs	4	6.1	31	11	1	2	9	2.05
Omaha Storm Chasers	Triple-A	One Out	4	5.2	19	2	0	1	2	0.53
Omaha Storm Chasers	Triple-A	Two Outs	4	4.0	19	6	0	1	3	1.75

Inning Splits

Team	L	Type	ERA	G	IP	BF	H	R	ER	HR	BB	SO	WHIP
Omaha Storm Chasers	Triple-A	First Inning	2.25	4	4.0	16	6	1	1	0	0	2	1.50
Omaha Storm Chasers	Triple-A	Second Inning	0.00	4	4.0	16	2	0	0	0	1	4	0.75
Omaha Storm Chasers	Triple-A	Third Inning	2.25	4	4.0	18	6	3	1	0	0	3	1.50
Omaha Storm Chasers	Triple-A	Fourth Inning	4.91	4	3.2	16	4	2	2	1	3	4	1.91
Omaha Storm Chasers	Triple-A	Fifth Inning	13.50	2	0.2	3	1	1	1	0	0	1	1.50

Date	Home Tm	Away Tm	W	L	ERA	G	GS	IP	H	R	ER	HR	BB	SO	WHIP
2026-05-05	Kansas City Royals	Cleveland Guardians	1	0	4.50	1	1	6.0	4	3	3	1	0	3	0.67
2026-05-12	Chicago White Sox	Kansas City Royals	0	0	6.75	1	1	4.2	5	5	5	2	3	6	1.13
2026-05-17	St. Louis Cardinals	Kansas City Royals	1	0	4.24	1	1	6.1	4	0	0	0	1	3	1.00
2026-05-23	Kansas City Royals	Seattle Mariners	1	0	2.77	1	1	9.0	4	0	0	0	1	2	0.85
2026-05-29	Texas Rangers	Kansas City Royals	0	1	3.48	1	1	5.0	6	6	4	1	1	5	0.94
May	Kansas City Royals		3	1	3.48	5	5	31.0	23	14	12	4	6	19	0.94
2026-06-03	Cincinnati Reds	Kansas City Royals	0	0	3.32	1	1	7.0	6	2	2	1	2	8	0.97
June	Kansas City Royals		0	0	2.57	1	1	7.0	6	2	2	1	2	8	1.14

Date	Home Tm	Away Tm	L	ERA	G	GS	IP	H	R	ER	HR	BB	SO	WHIP
2026-04-14	Omaha Storm Chasers	Indianapolis Indians	0	0.00	1	1	4.0	3	0	0	0	1	2	1.00
2026-04-19	Omaha Storm Chasers	Indianapolis Indians	0	2.16	1	1	4.1	4	2	2	0	1	4	1.08
2026-04-24	Toledo Mud Hens	Omaha Storm Chasers	0	3.00	1	1	3.2	4	2	2	1	2	4	1.25
2026-04-29	Omaha Storm Chasers	Louisville Bats	1	2.76	1	1	4.1	8	3	1	0	0	4	1.41
April	Omaha Storm Chasers		1	2.76	4	4	16.1	19	7	5	1	4	14	1.41

Statcast Statistics

Season	Age	Pitches	Batted Balls	Barrels	Barrel %	Barrel/PA	Exit Velocity	Max EV	Launch Angle	LA Sweet- Spot %	xBA	xSLG	wOBA	xwOBA	xwOBAcon	HardHit%	K%	BB%	ERA	xERA
2024	27	797	156	6	3.8	2.8	88.1	113.5	3.6	30.8	.280	.416	.336	.332	.381	41.0	18.5	5.7	5.21	4.55
2025	28	1689	346	21	6.1	4.6	91.1	111.9	7.4	32.9	.261	.406	.280	.321	.352	48.0	16.7	6.7	3.52	4.30
2026	29	554	113	8	7.1	5.4	88.8	112.8	10.1	31.0	.238	.360	.272	.283	.317	38.1	18.1	5.4	3.32	3.18
Player		3040	615	35	5.7	4.3	90.0	113.5	6.9	32.0	.261	.400	.293	.317	.353	44.4	17.4	6.2
MLB					7.6	4.9	88.6	122.9	12.5	33.3	.243	.408	.315	.316	.369	37.0	22.2	8.4

! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Kolek relies on 6 pitches.

Four Seamer

(30.0%) ,

Sinker

(23.5%) ,

Changeup

(13.2%) ,

Slider

(12.5%) ,

Cutter

(11.7%) ,

Sweeper

(9.2%) ,

+ If Available Pitches Click to Video.

+ View Stephen Kolek's Pitches in 3d

Batted Ball Profile

Season	GB %	AIR %	FB %	LD %	PU %	Pull %	Straight %	Oppo %	Pull GB %	Straight GB %	Oppo GB %	Pull AIR %	Straight AIR %	Oppo AIR %
		AIR: Fly Balls + Line Drives + Popups				All Batted Balls			Batted Ball Breakdown
2024	56.4	43.6	16.7	25.6	1.3	28.2	39.1	32.7	21.8	25.0	9.6	6.4	14.1	23.1
2025	51.7	48.3	22.3	22.5	3.5	36.7	39.6	23.7	23.4	23.4	4.9	13.3	16.2	18.8
2026	49.6	50.4	23.0	22.1	5.3	42.5	35.4	22.1	28.3	15.9	5.3	14.2	19.5	16.8
Player	52.5	47.5	21.0	23.3	3.3	35.6	38.7	25.7	23.9	22.4	6.2	11.7	16.3	19.5
MLB	44.2	55.8	24.1	24.6	7.1	37.4	37.3	25.1	20.7	17.6	5.9	16.8	19.7	19.3

! Note: All figures in this table cover the period 2015-present.

Quality of Contact

Season	Weak %	Topped %	Under %	Flare/Burner %	Solid %	Barrel %	Barrel/PA
2024	4.5	46.8	12.2	26.9	5.8	3.8	2.8
2025	2.6	37.0	19.1	26.0	8.1	6.1	4.6
2026	3.5	38.9	23.0	19.5	7.1	7.1	5.4
Player	3.3	39.8	18.0	25.0	7.3	5.7	4.3
MLB	4.0	32.3	24.9	24.4	5.9	7.6	4.9

! Note: All figures in this table cover the period 2015-present.

Similar Pitchers to Stephen Kolek:

2025 - Jorge López

2025 - Hunter Dobbins

2025 - Justin Topa

2025 - Lyon Richardson

2025 - Adrian Houser

--- Compare All Similar Pitchers

How this works: This section shows two different ways to evaluate pitch movement. On the left, “Total Movement” shows the real-world movement of a pitch, including the forces of gravity, which affects every pitch thrown. Since gravity requires time, and slower pitches aren't 'better' just because they have more time to move, a pitch's movement is compared to other pitches of the same pitch type, within +/- 2 MPH and +/- 0.5 feet of extension/release. On the right, Induced Movement (or IVB) is reported without gravity, and attempts to isolate movement created by the pitcher's ability to spin and manipulate the ball.

						Total Movement (in inches, w/ gravity)				Induced Movement (in inches, w/o gravity)
Year	Pitch	Team	Hand	#	MPH	Vertical Drop	vs. Comparable	Horizontal Break	vs. Comparable	Vertical Break	vs. Avg	Horizontal Break	vs. Avg
2026	Sinker	KC	R	130	93.6	26.8	3.0	15.2ARM	-0.7	4.5	3.2	15.2ARM	-0.1
2026	Changeup	KC	R	73	87.2	33.8	0.5	12.5ARM	-2.2	2.3	1.7	12.5ARM	-2.1
2026	4-Seam Fastball	KC	R	166	94.1	17.4	-2.3	6.7ARM	-1.5	13.4	-2.6	6.7ARM	-1.1
2026	Cutter	KC	R	65	90.0	27.5	-2.1	1.9GLV	0.1	6.0	-2.3	1.9GLV	-0.3
2026	Slider	KC	R	69	85.2	38.8	2.4	3.5GLV	-1.1	-1.3	2.7	3.5GLV	-0.5
2026	Sweeper	KC	R	51	79.8	48.6	7.2	15.0GLV	-0.2	-5.4	6.5	15.0GLV	1.1
2025	Curveball	KC	R	1	78.6	55.5	2.5	10.5GLV	-1.4	-11.0	0.8	10.5GLV	1.5
2025	4-Seam Fastball	KC	R	433	94.0	18.1	-2.2	8.2ARM	-0.4	12.9	-2.9	8.2ARM	0.6
2025	Cutter	KC	R	256	90.5	25.6	-0.7	0.0GLV	-1.2	7.6	-0.8	0.0GLV	-2.2
2025	Sweeper	KC	R	117	82.5	40.7	2.1	14.1GLV	0.2	-0.2	1.1	14.1GLV	0.2
2025	Slider	KC	R	279	85.4	37.8	1.8	2.8GLV	-2.8	-0.4	2.2	2.8GLV	-1.5
2025	Sinker	KC	R	407	93.6	27.0	2.5	16.0ARM	0.2	4.4	3.0	16.0ARM	0.9
2025	Changeup	KC	R	196	87.5	36.5	3.2	13.5ARM	-1.2	-0.5	4.6	13.5ARM	-1.0
2024	Slider	SD	R	78	88.2	34.0	0.8	3.1GLV	-0.8	1.1	0.6	3.1GLV	-1.5
2024	4-Seam Fastball	SD	R	103	95.8	15.9	-1.4	5.8ARM	-2.4	13.9	-1.9	5.8ARM	-1.7
2024	Sweeper	SD	R	83	83.7	42.2	4.7	16.2GLV	2.6	-2.8	4.1	16.2GLV	2.3
2024	Changeup	SD	R	53	88.7	35.0	3.8	17.2ARM	2.2	-0.1	5.0	17.2ARM	3.0
2024	Cutter	SD	R	152	92.4	24.1	-1.4	0.8GLV	-0.4	7.8	-0.5	0.8GLV	-1.9
2024	Sinker	SD	R	328	95.2	24.9	1.9	15.2ARM	-0.3	5.5	1.7	15.2ARM	0.4

! Note: Years are in reverse order.

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Run Values by Pitch Type

Year	Pitch Type	RV/100	Run Value	Pitches	%	PA	BA	SLG	wOBA	Whiff%	K%	PutAway %	xBA	xSLG	xwOBA	Hard Hit %
2026	4-Seam Fastball	1.2	2	166	30.0	30	.143	.214	.250	20.3	10.0	7.1	.234	.372	.288	28.0
2026	Sinker	2.0	3	130	23.5	43	.275	.400	.329	6.7	9.3	13.8	.243	.327	.279	47.2
2026	Changeup	1.5	1	73	13.2	24	.227	.227	.246	18.9	16.7	17.4	.293	.388	.329	22.2
2026	Slider	0.7	1	69	12.5	25	.125	.375	.224	45.0	48.0	37.5	.140	.250	.186	50.0
2026	Cutter	0.0	0	65	11.7	15	.200	.600	.327	12.9	20.0	42.9	.239	.509	.314	50.0
2026	Sweeper	-1.9	-1	51	9.2	12	.273	.455	.342	14.3	8.3	10.0	.329	.421	.353	30.0
2025	4-Seam Fastball	0.6	3	433	25.6	110	.200	.389	.297	15.4	22.7	16.8	.245	.471	.350	51.4
2025	Sinker	0.8	3	407	24.1	132	.267	.310	.328	13.1	9.8	15.3	.272	.363	.327	51.5
2025	Slider	-0.1	0	279	16.5	83	.237	.375	.295	21.3	18.1	15.5	.296	.400	.312	49.3
2025	Cutter	1.7	4	256	15.2	66	.276	.345	.314	19.0	13.6	24.3	.258	.424	.330	44.0
2025	Changeup	2.6	5	196	11.6	42	.049	.049	.108	24.7	26.2	21.2	.163	.245	.203	41.9
2025	Sweeper	-3.5	-4	117	6.9	27	.407	.630	.446	18.4	14.8	10.8	.309	.581	.377	34.8
2025	Curveball	-4.1	0	1	0.1		--	--	--	--	--	--	--	--	--	--
2024	Sinker	0.3	1	328	41.2	86	.311	.351	.361	19.3	11.6	13.5	.273	.371	.345	56.3
2024	Cutter	-0.2	0	152	19.1	41	.325	.450	.346	19.8	9.8	12.5	.252	.365	.280	13.9
2024	4-Seam Fastball	1.9	2	103	12.9	21	.190	.238	.188	24.2	42.9	16.7	.224	.254	.213	25.0
2024	Sweeper	-4.4	-4	83	10.4	24	.364	.773	.494	25.7	25.0	18.8	.389	.790	.514	68.8
2024	Slider	-1.2	-1	78	9.8	23	.304	.435	.322	25.0	21.7	16.7	.364	.585	.408	33.3
2024	Changeup	-0.1	0	53	6.6	16	.267	.267	.269	16.7	31.3	20.0	.179	.191	.203	30.0

! Note: Years are in reverse order.

! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.

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Spin Direction

Year	Pitch Type	Pitches	MPH	Active Spin %	Total Movement (In.)	Spin-Based	Observed	Deviation
2026	Changeup	64	87.2	68	13.6	1:45	2:45	-60
2026	Cutter	65	90.0	35	5.6	12:30	11:15	75
2026	4-Seam Fastball	166	94.1	85	14.5	1:15	1:00	15
2026	Sinker	128	93.6	72	16.3	1:15	2:30	-75
2026	Slider	69	85.2	25	4.9	8:45	7:45	60
2026	Sweeper	51	79.8	69	17.6	7:30	8:15	-45
2025	Changeup	135	87.5	72	14.2	2:00	3:00	-60
2025	Cutter	256	90.5	40	6.9	1:00	12:00	60
2025	4-Seam Fastball	433	94.0	88	14.9	1:30	1:15	15
2025	Sinker	395	93.6	76	17.2	1:30	2:45	-75
2025	Slider	279	85.4	25	4.0	8:45	8:00	45
2025	Sweeper	117	82.5	45	15.4	8:00	8:45	-45
2024	Changeup	49	88.7	86	18.3	2:15	3:15	-60
2024	Cutter	147	92.4	39	7.2	12:30	11:45	45
2024	4-Seam Fastball	100	95.8	82	14.6	1:15	12:45	30
2024	Sinker	298	95.2	72	16.6	1:15	2:30	-75
2024	Slider	78	88.2	22	3.8	10:00	8:45	75
2024	Sweeper	81	83.7	65	17.7	7:45	8:30	-45

! Note: Years are in reverse order.

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! Note: This table is showing data from the PITCHER perspective.

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Pitcher Arm Angle

! Note: Data is available from 2020 through the present.

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Statcast Pitching Run Value

				Runs
Year	Team	PA	Pitches	Heart	Shadow	Chase	Waste	All
2024		211	797	-2	7	-4	-3	-2
2025		460	1,689	18	10	-10	-7	11
2026		149	554	0	10	-4	-2	5
Player		820	3,040	16	28	-17	16	14

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+ Show Leverage-Based Run Value

Statcast Pitching Run Value (Leveraged)

These run values are leveraged, meaning the base/out situation at the time of the event does impact the run value (thus introducing context outside the batter's own contribution).

				Runs
Year	Team	PA	Pitches	Heart	Shadow	Chase	Waste	All	+/- Due To Leverage
2024		211	797	-5	9	-3	-3	-1	1
2025		460	1,689	12	8	-7	-7	5	-6
2026		149	554	-2	8	-3	-1	3	-3
Player		820	3,040	5	25	-12	5	7	-7

Plate Discipline

Season	Pitches	Zone %	Zone Swing %	Zone Contact %	Chase %	Chase Contact %	Edge %	1st Pitch Strike %	Swing %	Whiff %	Meatball %	Meatball Swing %
2024	797	54.1	67.5	85.2	27.9	60.8	44.5	64.9	49.3	21.1	8.3	63.6
2025	1,689	51.7	66.0	89.6	26.3	62.6	44.6	63.1	46.8	17.7	8.7	70.7
2026	554	50.5	67.5	87.3	26.3	62.5	49.1	59.1	47.1	19.5	5.6	67.7
Player	3,040	52.1	66.7	88.0	26.7	62.1	45.4	62.9	47.5	19.0	8.0	68.4
MLB		48.7	67.0	82.6	28.5	58.0	42.7	61.1	47.3	25.0	7.3	76.2

! Note: All figures in this table cover the period 2015-present.

Percentile Rankings

Year	Pitching	Fastball	Breaking	Off Speed	xERA	Fastball MPH	Fastball Spin	Avg EV	Chase%	Whiff%	K%	BB%	Barrel%	Hard- Hit%	GB%	Extension
	Run Value				Pitching
2024	35	62	13	56	22	71	42	71	39	13	14	86	96	30	94	40
2025	81	87	18	88	34	41	19	7	25	3	10	73	82	4	87	34
2026	78	85	38	73	77	39	37	52	17	13	23	92	56	55	81	32

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Expected Home Runs

Adjusted

Year	Avg HR Trot	Actual HR	xHR	HR-xHR	Doubters	Mostly Gone	No Doubters	No Doubter %
2024	25.87	4	4.7	-1	2	3	2	50.0
2025	24.37	9	7.9	1	4	8	3	33.3
2026	21.94	5	3.6	1	2	4	1	20.0
Player	24.03	18	16.2	2	8	15	6	33.3

Note: xHR tells how many of this pitcher's batted balls allowed would have been out of other stadiums. The "Adjusted" view here accounts for different wall heights, distances and environmental effects using Statcast Park Factor data.

Standard

Year	Avg HR Trot	Actual HR	xHR	HR-xHR	Doubters	Mostly Gone	No Doubters	No Doubter %
2024	25.87	4	4.5	-1	2	3	2	50.0
2025	24.37	9	8.4	1	5	8	3	33.3
2026	21.94	5	4.0	1	0	6	1	20.0
Player	24.03	18	17.0	1	7	17	6	33.3

Note: xHR tells how many of this pitcher's batted balls allowed would have been out of other stadiums. The "Standard" view here accounts for different wall heights and distances but excludes environmental effects. It is based purely on the observed trajectory of the hit.

+ View Standard Expected Home Runs

Expected Home Runs by Park

Adjusted

Year	HR
2024	4	4	4	6	5	5	5	4	4	4	5	6	6	4	5	5	5	4	4	5	4	5	6	5	4	4	4	5	5	4	4
2025	9	7	8	8	8	9	7	5	9	6	10	12	8	12	9	5	7	5	5	11	5	6	12	8	6	6	8	11	6	9	8
2026	5	3	3	3	5	5	5	2	5	5	5	5	1	5	5	3	3	2	3	5	1	2	5	3	3	1	5	5	4	4	3
Player	18	14	15	17	18	19	17	11	18	15	20	23	15	21	19	13	15	11	12	21	10	13	23	16	13	11	17	21	15	17	15

Standard

Year	HR
2024	4	4	5	6	5	5	5	4	5	4	4	6	5	4	5	4	4	4	4	6	4	5	5	4	4	4	3	4	5	5	4
2025	9	7	10	9	13	9	11	7	9	4	8	12	7	9	12	6	6	7	10	11	6	10	12	8	5	8	7	4	8	10	8
2026	5	4	3	5	4	6	6	4	4	3	4	6	3	5	7	3	4	2	4	6	2	2	6	3	5	1	3	1	4	6	4
Player	18	15	18	20	22	20	22	15	18	11	16	24	15	18	24	13	14	13	18	23	12	17	23	15	14	13	13	9	17	21	16

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Year to Year Changes

	2026	+/-		2025	+/-		2024
Results
BA	.207	-.028	↓	.235	-.068	↓	.303
xBA	.238	-.023	↓	.261	-.019	↓	.280
OBP	.255	-.041	↓	.296	-.056	↓	.352
xOBP	.284	-.039	↓	.323	-.008	↓	.331
SLG	.357	+.016	↑	.341	-.069	↓	.410
xSLG	.360	-.046	↓	.406	-.010	↓	.416
ISO	.150	+.044	↑	.106	-.002	↓	.108
xISO	.122	-.024	↓	.146	+.010	↑	.136
BABIP	.222	-.042	↓	.264	-.098	↓	.362
wOBA	.272	-.008	↓	.280	-.056	↓	.336
xwOBA	.283	-.038	↓	.321	-.011	↓	.332
wOBAcon	.302	+.004	↑	.298	-.087	↓	.385
xwOBAcon	.317	-.035	↓	.352	-.029	↓	.381
BACON	.257	-.026	↓	.283	-.095	↓	.378
xBACON	.295	-.026	↓	.321	-.029	↓	.350
Statcast Hit Metrics
Hard Hit %	38.1	-9.9	↓	48.0	+7.0	↑	41.0
Avg Exit Velocity	88.8	-2.3	↓	91.1	+3.0	↑	88.1
Launch Angle Sweet-Spot %	31.0	-1.9	↓	32.9	+2.1	↑	30.8
Barrel %	7.1	+1.0	↑	6.1	+2.3	↑	3.8
Avg Launch Angle	10.1	+2.7	↑	7.4	+3.8	↑	3.6
Statcast Bat Tracking
Bat Speed	71.9	-0.1	↓	72.0	+1.5	↑	70.5
Attack Angle	8°	+1°	↑	7°	+3°	↑	4°
Ideal Attack Angle %	47.4	-1.0	↓	48.4	+6.2	↑	42.2
Attack Direction	3°	0°	↑	3°	-7°	↓	10°
Swing Path - Tilt	33°	0°	↓	33°	+1°	↑	32°
Swing Length	7.1	0.0		7.1	+0.2	↑	6.9
Statcast Pitch Metrics
Fastball Velocity	93.2	+0.2	↑	93.0	-1.6	↓	94.6
Breaking Velocity	82.9	-1.6	↓	84.5	-1.4	↓	85.9
Offspeed Velocity	87.2	-0.3	↓	87.5	-1.2	↓	88.7
Batted Ball Results
Barrels	8	-13	↓	21	+15	↑	6
Popup %	5.3	+1.8	↑	3.5	+2.2	↑	1.3
Flyball %	23.0	+0.7	↑	22.3	+5.6	↑	16.7
Line Drive %	22.1	-0.4	↓	22.5	-3.1	↓	25.6
Groundball %	49.6	-2.1	↓	51.7	-4.7	↓	56.4
Pull %	42.5	+5.8	↑	36.7	+8.5	↑	28.2
Straight Away %	35.4	-4.2	↓	39.6	+0.5	↑	39.1
Opposite Field %	22.1	-1.6	↓	23.7	-9.0	↓	32.7
Weak Contact %	3.5	+0.9	↑	2.6	-1.9	↓	4.5
Pull Airball %	14.2	+0.9	↑	13.3	+6.9	↑	6.4
Topped Contact %	38.9	+1.9	↑	37.0	-9.8	↓	46.8
Under Contact %	23.0	+3.9	↑	19.1	+6.9	↑	12.2
Flare/Burner Contact %	19.5	-6.5	↓	26.0	-0.9	↓	26.9
Solid Contact %	7.1	-1.0	↓	8.1	+2.3	↑	5.8
HR/FB %	19.2	+7.5	↑	11.7	-3.7	↓	15.4
Popups	6	-6	↓	12	+10	↑	2
Flyballs	26	-51	↓	77	+51	↑	26
Line Drives	25	-53	↓	78	+38	↑	40
Groundballs	56	-123	↓	179	+91	↑	88
Plate Discipline
In Zone %	50.5	-1.2	↓	51.7	-2.4	↓	54.1
Out of Zone %	49.5	+1.2	↑	48.3	+2.4	↑	45.9
Edge %	49.1	+4.5	↑	44.6	+0.1	↑	44.5
Zone Swing %	67.5	+1.5	↑	66.0	-1.5	↓	67.5
Out of Zone Swing %	26.3	0.0		26.3	-1.6	↓	27.9
In Zone Contact %	87.3	-2.3	↓	89.6	+4.4	↑	85.2
Out of Zone Contact %	62.5	-0.1	↓	62.6	+1.8	↑	60.8
Whiff %	19.5	+1.8	↑	17.7	-3.4	↓	21.1
First Strike %	59.1	-4.0	↓	63.1	-1.8	↓	64.9
First Pitch Swing %	25.5	-9.9	↓	35.4	+4.6	↑	30.8
Swing %	47.1	+0.3	↑	46.8	-2.5	↓	49.3
Meatball Swing %	67.7	-3.0	↓	70.7	+7.1	↑	63.6
Meatball %	5.6	-3.1	↓	8.7	+0.4	↑	8.3
Zone Swing & Miss %	12.7	+2.3	↑	10.4	-4.4	↓	14.8
Out of Zone Swing & Miss %	37.5	+0.1	↑	37.4	-1.8	↓	39.2
In Zone	280	-594	↓	874	+443	↑	431
Out of Zone	274	-541	↓	815	+449	↑	366
Edge	272	-481	↓	753	+398	↑	355
In Zone Swings	189	-388	↓	577	+286	↑	291
Out of Zone Swings	72	-142	↓	214	+112	↑	102
In Zone Swing & Misses	24	-36	↓	60	+17	↑	43
Out of Zone Swing & Misses	27	-53	↓	80	+40	↑	40
Basic
Pitches	554	-1,135	↓	1,689	+892	↑	797
PA	149	-312	↓	461	+250	↑	211
AB	140	-277	↓	417	+222	↑	195
Hits	29	-69	↓	98	+39	↑	59
Singles	18	-56	↓	74	+28	↑	46
Doubles	6	-7	↓	13	+4	↑	9
Triples	0	-2	↓	2	+2	↑	0
Home Runs	5	-4	↓	9	+5	↑	4
Walks	8	-23	↓	31	+19	↑	12
Strikeouts	27	-50	↓	77	+38	↑	39
K%	18.1	+1.4	↑	16.7	-1.8	↓	18.5
BB%	5.4	-1.3	↓	6.7	+1.0	↑	5.7
HBP	1	-6	↓	7	+4	↑	3
Batted Balls	113	-233	↓	346	+190	↑	156
Number of Fastballs	361	-735	↓	1,096	+513	↑	583
Number of Offspeed	73	-123	↓	196	+143	↑	53
Number of Breaking	120	-277	↓	397	+236	↑	161

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Statcast Fielder Positioning

				vs RHH			vs LHH
Year	Alignment Type	PA	wOBA	PA	Total	%	PA	Total	%
2024	Shades	207	.335	118	1	0.8	89	39	43.8
2025	Shades	460	.280	210	5	2.4	250	222	88.8
2026	Shades	149	.272	59	17	28.8	90	49	54.4

! Note: Shifts are through the 2022 season, Shaded starting from the 2023 season, Shift: three or more infielders are on the same side of second base, Shade: positioned outside of their typical responsible slices of the field.
Learn more about how positioning is defined here

Pitch Tempo

		Bases Empty				Runners On Base
Season	Team	Pitches	Tempo	Fast %	Slow %	Pitches	Tempo	Fast %	Slow %
2024		173	14.9	52.0%	0.6%	176	18.1	8.0%	0.0%
2025		540	14.6	57.0%	0.0%	232	18.7	3.0%	0.9%
2026		166	15.3	43.4%	1.2%	92	18.3	7.6%	1.1%

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Pitch Distribution

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Statcast Fielding Run Value

			Infield/Outfield				Catching				Innings By Position
Year	Team	Run Value	INF/OF Runs	Range	Arm	Inf. DP	Catching Runs	Framing	Throwing	Blocking	Total Innings	C	1B	2B	3B	SS	LF	CF	RF
2024		--	--	--	--	--	--	--	--	--	47	--	--	--	--	--	--	--	--
2025		--	--	--	--	--	--	--	--	--	113	--	--	--	--	--	--	--	--
2026		--	--	--	--	--	--	--	--	--	38	--	--	--	--	--	--	--	--
Player		--	--	--	--	--	--	--	--	--	197	--	--	--	--	--	--	--	--

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Statcast Fielding Breakdown

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