Justin Slaten Stats: Statcast, Visuals & Advanced Metrics

P | Boston Red Sox

Bats/Throws: R/R | 6' 4" 222 lbs | Age: 28

Draft: 2019 | Rd. 3, No. 86, Texas Rangers | New Mexico

	W	L	ERA	G	SV	IP	SO	WHIP
2024	6	2	2.93	44	2	55.1	58	1.01
2025	2	4	4.24	36	3	34	25	1.09
2 Seasons	8	6	3.43	80	5	89.1	83	1.04

	G	W-L	ERA	IP	SO	WHIP
2024	44	6-2	2.93	55.1	58	1.01
2025	36	2-4	4.24	34	25	1.09
2 Seasons	80	8-6	3.43	89.1	83	1.04

Player Apps

Random Video illustrator Visual Report 3D Pitches Player Similarity Swing Take Profile

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	SV	IP	H	R	ER	HR	BB	SO	WHIP
2024	BOS	AL	224	6	2	2.93	44	2	55.1	47	21	18	4	9	58	1.01
2025	BOS	AL	137	2	4	4.24	36	3	34.0	27	19	16	3	10	25	1.09
2 Seasons	BOS	AL	361	8	6	3.43	80	5	89.1	74	40	34	7	19	83	1.04

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

Standard MLB Fielding Statistics

Season	Tm	LG	POS	G	INN	TC	PO	A	FPCT%
2024	BOS	AL	P	44	55.1	4	2	2	1.000
2025	BOS	AL	P	36	34.0	4	3	1	1.000
2 Seasons	BOS	AL	P	80	89.1	8	5	3	1.000

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
2019	2 Teams		Minors	0	2	6.06	11	10	0	16.1	21	13	11	2	7	22	1.71
2019	AZL Rangers	AZL	ROK	0	0	0.00	1	0	0	1.0	0	0	0	0	0	1	0.00
2019	Spokane Indians	NWL	A(Short)	0	2	6.46	10	10	0	15.1	21	13	11	2	7	21	1.83
2021	Hickory Crawdads	A+ E	A+	4	8	6.01	20	19	0	82.1	93	60	55	17	31	110	1.51
2022	2 Teams		Minors	1	6	6.79	26	5	0	51.2	49	41	39	6	48	66	1.88
2022	ACL Rangers	ACL	ROK	0	0	0.00	1	0	0	1.0	0	0	0	0	0	2	0.00
2022	Frisco RoughRiders	TEX	AA	1	6	6.93	25	5	0	50.2	49	41	39	6	48	64	1.91
2023	2 Teams		Minors	5	3	2.87	40	1	2	59.2	44	22	19	10	20	86	1.07
2023	Frisco RoughRiders	TEX	AA	4	3	3.16	35	1	2	51.1	41	21	18	9	16	76	1.11
2023	Round Rock Express	PCL	AAA	1	0	1.08	5	0	0	8.1	3	1	1	1	4	10	0.84
2024	Portland Sea Dogs	EAS	AA	0	0	27.00	1	0	0	0.1	1	1	1	0	1	1	6.00
2025	Worcester Red Sox	INT	AAA	1	0	0.00	3	0	0	3.0	1	1	0	0	1	5	0.67
	ACL Rangers	ACL	ROK	0	0	0.00	2	0	0	2.0	0	0	0	0	0	3	0.00
	2 Teams		AAA	2	0	0.79	8	0	0	11.1	4	2	1	1	5	15	0.79
	2 Teams		AA	5	9	5.10	61	6	2	102.1	91	63	58	15	65	141	1.52
	Hickory Crawdads	CAR	A+	4	8	6.01	20	19	0	82.1	93	60	55	17	31	110	1.51
	Spokane Indians	NWL	A(Short)	0	2	6.46	10	10	0	15.1	21	13	11	2	7	21	1.83
Career Minors	7 Teams			11	19	5.27	101	35	2	213.1	209	138	125	35	108	290	1.49

Standard Minor League Fielding Statistics

Season	Tm	LG	L	POS	G	GS	INN	TC	PO	A	DP	FPCT%
2019	2 Teams		Minors	P	11	10	16.1	2	0	2	0	1.000
2019	AZL Rangers	AZL	ROK	P	1	0	1.0	0	0	0	0	.000
2019	Spokane Indians	NWL	A(Short)	P	10	10	15.1	2	0	2	0	1.000
2021	Hickory Crawdads	A+ E	A+	P	20	19	82.1	5	1	4	0	1.000
2022	2 Teams		Minors	P	26	5	51.2	11	2	9	0	1.000
2022	ACL Rangers	ACL	ROK	P	1	0	1.0	0	0	0	0	.000
2022	Frisco RoughRiders	TEX	AA	P	25	5	50.2	11	2	9	0	1.000
2023	2 Teams		Minors	P	40	1	59.2	12	6	6	3	1.000
2023	Frisco RoughRiders	TEX	AA	P	35	1	51.1	12	6	6	3	1.000
2023	Round Rock Express	PCL	AAA	P	5	0	8.1	0	0	0	0	.000
2024	Portland Sea Dogs	EAS	AA	P	1	0	0.1	0	0	0	0	.000
2025	Worcester Red Sox	INT	AAA	P	3	0	3.0	0	0	0	0	.000
	ACL Rangers	ACL	ROK	P	2	0	2.0	0	0	0	0	.000
	2 Teams		AAA	P	8	0	11.1	0	0	0	0	.000
	2 Teams		AA	P	61	6	102.1	23	8	15	3	1.000
	Hickory Crawdads	CAR	A+	P	20	19	82.1	5	1	4	0	1.000
	Spokane Indians	NWL	A(Short)	P	10	10	15.1	2	0	2	0	1.000
Career Minors	7 Teams			P	101	35	213.1	30	9	21	3	1.000

Awards

Red Sox Fireman's Award

Year	Team
2024

SAL Pitcher of the Week

Week	Team
07/11/2021

Transactions

Team	Date	Transaction
	08/28/2025	Boston Red Sox activated RHP Justin Slaten from the 60-day injured list.
	08/19/2025	Boston Red Sox sent RHP Justin Slaten on a rehab assignment to Worcester Red Sox.
	08/19/2025	Boston Red Sox sent RHP Justin Slaten on a rehab assignment to Worcester Red Sox.
	06/28/2025	Boston Red Sox transferred RHP Justin Slaten from the 15-day injured list to the 60-day injured list.
	06/01/2025	Boston Red Sox placed RHP Justin Slaten on the 15-day injured list retroactive to May 29, 2025. Right shoulder inflammation.
	04/16/2025	RHP Justin Slaten changed number to 63.
	04/15/2025	RHP Justin Slaten changed number to 42.
	08/26/2024	Boston Red Sox activated RHP Justin Slaten from the 15-day injured list.
	08/23/2024	Boston Red Sox sent RHP Justin Slaten on a rehab assignment to Portland Sea Dogs.
	07/12/2024	Boston Red Sox placed RHP Justin Slaten on the 15-day injured list retroactive to July 9, 2024. Right elbow inflammation.
	12/06/2023	New York Mets drafted RHP Justin Slaten.
	12/06/2023	New York Mets traded RHP Justin Slaten to Boston Red Sox for LHP Ryan Ammons.
	09/22/2023	Surprise Saguaros activated RHP Justin Slaten.
	09/12/2023	RHP Justin Slaten assigned to Round Rock Express from Frisco RoughRiders.
	06/02/2023	Frisco RoughRiders activated RHP Justin Slaten from the 7-day injured list.
	05/02/2023	Frisco RoughRiders placed RHP Justin Slaten on the 7-day injured list.
	10/05/2022	Frisco RoughRiders activated RHP Justin Slaten from the 7-day injured list.
	07/12/2022	Frisco RoughRiders activated RHP Justin Slaten.
	07/12/2022	Frisco RoughRiders placed RHP Justin Slaten on the 7-day injured list.
	07/08/2022	Frisco RoughRiders sent RHP Justin Slaten on a rehab assignment to ACL Rangers.
	06/23/2022	Frisco RoughRiders placed RHP Justin Slaten on the 7-day injured list.
	03/31/2022	RHP Justin Slaten assigned to Frisco RoughRiders from Hickory Crawdads.
	10/08/2021	Hickory Crawdads activated RHP Justin Slaten.
	09/15/2021	Hickory Crawdads transferred RHP Justin Slaten to the Development List.
	05/04/2021	RHP Justin Slaten assigned to Hickory Crawdads from Rangers Organization.
	02/12/2021	RHP Justin Slaten assigned to Rangers Organization.
	02/12/2021	RHP Justin Slaten assigned to Rangers Organization.
	06/24/2019	RHP Justin Slaten assigned to Spokane Indians from AZL Rangers.
	06/24/2019	RHP Justin Slaten assigned to Spokane Indians.
	06/17/2019	RHP Justin Slaten assigned to AZL Rangers.
	06/17/2019	RHP Justin Slaten assigned to AZL Rangers.
	06/12/2019	Texas Rangers signed RHP Justin Slaten.

Platoon Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP
Boston Red Sox	MLB	vs Left				33			14.2	60	10			1	7	10	1.16
Boston Red Sox	MLB	vs Right				36			19.1	77	17			2	3	15	1.03

Monthly Splits

Team	L	Type	W	L	ERA	G	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP
Boston Red Sox	MLB	March	0	0	18.00	3	1	2.0	10	3	4	4	0	1	1	2.00
Boston Red Sox	MLB	April	0	1	0.00	9	2	8.1	30	2	1	0	0	3	8	0.60
Boston Red Sox	MLB	May	1	3	3.46	12	0	13.0	50	9	7	5	1	3	7	0.92
Boston Red Sox	MLB	August	0	0	4.50	2	0	2.0	9	3	1	1	1	1	3	2.00
Boston Red Sox	MLB	September	1	0	6.23	10	0	8.2	38	10	6	6	1	2	6	1.38
Boston Red Sox	MLB	Pre All-Star	1	4	3.47	24	3	23.1	90	14	12	9	1	7	16	0.90
Boston Red Sox	MLB	Post All-Star	1	0	5.91	12	0	10.2	47	13	7	7	2	3	9	1.50

Baserunner Splits

Team	L	Type	G	IP	BF	H	HR	BB	SO	WHIP
Boston Red Sox	MLB	Bases Empty	31	21.2	80	11	1	4	18	0.69
Boston Red Sox	MLB	Bases Loaded	3	1.0	5	2	0	0	1	2.00
Boston Red Sox	MLB	Runner at 1st	14	6.1	23	6	0	0	2	0.95
Boston Red Sox	MLB	Runners at 1st & 2nd	6	2.1	7	1	1	0	2	0.43
Boston Red Sox	MLB	Runners at 1st & 3rd	6	1.0	6	1	0	1	1	2.00
Boston Red Sox	MLB	Runner at 2nd	6	1.0	7	3	0	1	1	4.00
Boston Red Sox	MLB	Runners at 2nd & 3rd	5	0.2	7	2	1	3	0	7.50
Boston Red Sox	MLB	Runner at 3rd	2	0.0	2	1	0	1	0	-.--
Boston Red Sox	MLB	Scoring Position	18	6.0	34	10	2	6	5	2.67

Game Type Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP
Boston Red Sox	MLB	Home Games	2	1	1.59	16	0	1	17.0	60	9	3	3	1	3	11	0.71
Boston Red Sox	MLB	Away Games	0	3	6.88	20	0	2	17.0	77	18	16	13	2	7	14	1.47
Boston Red Sox	MLB	Day Games	1	2	6.39	15	0	2	12.2	54	13	11	9	1	3	9	1.26
Boston Red Sox	MLB	Night Games	1	2	2.95	21	0	1	21.1	83	14	8	7	2	7	16	0.98
Boston Red Sox	MLB	Leading Off				33			7.2	33	8			1	2	4	1.30
Boston Red Sox	MLB	Late / Close				22			18.1	78	19			1	5	15	1.31

Outs Splits

Team	L	Type	G	IP	BF	H	HR	BB	SO	WHIP
Boston Red Sox	MLB	No Outs	34	11.1	47	10	1	3	7	1.15
Boston Red Sox	MLB	One Out	32	11.0	46	10	1	5	11	1.36
Boston Red Sox	MLB	Two Outs	30	11.2	44	7	1	2	7	0.77

Inning Splits

Team	L	Type	ERA	G	IP	BF	H	R	ER	HR	BB	SO	WHIP
Boston Red Sox	MLB	Fourth Inning	0.00	1	0.2	3	0	0	0	0	1	0	1.50
Boston Red Sox	MLB	Fifth Inning	18.00	3	1.0	6	2	2	2	0	1	0	3.00
Boston Red Sox	MLB	Sixth Inning	0.00	2	2.0	6	0	0	0	0	0	1	0.00
Boston Red Sox	MLB	Seventh Inning	1.04	11	8.2	32	7	1	1	1	1	8	0.92
Boston Red Sox	MLB	Eighth Inning	6.88	19	17.0	71	16	13	13	2	5	12	1.24
Boston Red Sox	MLB	Ninth Inning	0.00	4	4.0	12	0	0	0	0	0	4	0.00
Boston Red Sox	MLB	Extra Innings	0.00	2	0.2	7	2	3	0	0	2	0	6.00

Platoon Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP
Worcester Red Sox	Triple-A	vs Left				3			0.2	4	0			0	1	1	1.50
Worcester Red Sox	Triple-A	vs Right				3			2.1	8	1			0	0	4	0.43

Monthly Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP
Worcester Red Sox	Triple-A	August	1	0	0.00	3	0	0	3.0	12	1	1	0	0	1	5	0.67
Worcester Red Sox	Triple-A	Second Half	1	0	0.00	3	0	0	3.0	12	1	1	0	0	1	5	0.67

Baserunner Splits

Team	L	Type	G	IP	BF	H	BB	SO	WHIP
Worcester Red Sox	Triple-A	Bases Empty	3	2.1	8	1	0	4	0.43
Worcester Red Sox	Triple-A	Runner at 1st	1	0.0	1	0	0	0	-
Worcester Red Sox	Triple-A	Runners at 1st & 3rd	1	0.1	1	0	0	1	0.00
Worcester Red Sox	Triple-A	Runners at 2nd & 3rd	1	0.1	2	0	1	0	3.00
Worcester Red Sox	Triple-A	Scoring Position	1	0.2	3	0	1	1	1.50

Game Type Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	BB	SO	WHIP
Worcester Red Sox	Triple-A	Home Games	1	0	0.00	3	0	0	3.0	12	1	1	0	1	5	0.67
Worcester Red Sox	Triple-A	Day Games	1	0	0.00	1	0	0	1.0	3	0	0	0	0	0	0.00
Worcester Red Sox	Triple-A	Night Games	0	0	0.00	2	0	0	2.0	9	1	1	0	1	5	1.00
Worcester Red Sox	Triple-A	Leading Off				3			1.0	3	0			0	2	0.00

Outs Splits

Team	L	Type	G	IP	BF	H	BB	SO	WHIP
Worcester Red Sox	Triple-A	No Outs	3	1.0	3	0	0	2	0.00
Worcester Red Sox	Triple-A	One Out	3	1.0	6	1	1	2	2.00
Worcester Red Sox	Triple-A	Two Outs	3	1.0	3	0	0	1	0.00

Inning Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP
Worcester Red Sox	Triple-A	Fourth Inning			0.00	1			1.0	3	0	0	0	0	0	0	0.00
Worcester Red Sox	Triple-A	Sixth Inning			0.00	2			2.0	9	1	1	0	0	1	5	1.00

Date	Home Tm	Away Tm	W	L	ERA	G	SV	IP	H	R	ER	HR	BB	SO	WHIP
2025-03-27	Texas Rangers	Boston Red Sox	0	0	0.00	1	1	1.0	0	0	0	0	0	1	0.00
2025-03-30	Texas Rangers	Boston Red Sox	0	0	0.00	1	0	1.0	0	0	0	0	0	0	0.00
March	Boston Red Sox		0	0	18.00	3	1	2.0	3	4	4	0	1	1	2.00
2025-03-31	Baltimore Orioles	Boston Red Sox	0	0	18.00	1	0	0.0	3	4	4	0	1	0	2.00
2025-04-03	Baltimore Orioles	Boston Red Sox	0	0	12.00	1	0	1.0	1	0	0	0	0	1	1.67
2025-04-06	Boston Red Sox	St. Louis Cardinals	0	0	9.00	1	0	1.0	0	0	0	0	0	1	1.25
2025-04-09	Boston Red Sox	Toronto Blue Jays	0	0	7.20	1	0	1.0	0	0	0	0	0	0	1.00
2025-04-12	Chicago White Sox	Boston Red Sox	0	0	6.00	1	0	1.0	0	0	0	0	0	0	0.83
2025-04-16	Tampa Bay Rays	Boston Red Sox	0	0	5.14	1	1	1.0	0	0	0	0	0	2	0.71
2025-04-19	Boston Red Sox	Chicago White Sox	0	0	4.50	1	0	1.0	0	0	0	0	0	2	0.63
2025-04-21	Boston Red Sox	Chicago White Sox	0	0	4.00	1	1	1.0	0	0	0	0	0	1	0.56
2025-04-26	Cleveland Guardians	Boston Red Sox	0	0	3.60	1	0	1.0	0	0	0	0	1	1	0.60
2025-04-30	Toronto Blue Jays	Boston Red Sox	0	1	3.48	1	0	0.1	1	1	0	0	2	0	0.87
April	Boston Red Sox		0	1	0.00	9	2	8.1	2	1	0	0	3	8	0.60
2025-05-01	Toronto Blue Jays	Boston Red Sox	0	1	5.56	1	0	1.0	3	3	3	1	1	0	1.15
2025-05-04	Boston Red Sox	Minnesota Twins	0	1	6.57	1	0	1.0	3	2	2	0	0	0	1.30
2025-05-08	Boston Red Sox	Texas Rangers	1	0	5.93	1	0	1.1	0	0	0	0	0	0	1.17
2025-05-09	Kansas City Royals	Boston Red Sox	0	0	5.40	1	0	1.1	0	0	0	0	0	0	1.07
2025-05-13	Detroit Tigers	Boston Red Sox	0	0	5.06	1	0	1.0	0	0	0	0	0	3	1.00
2025-05-14	Detroit Tigers	Boston Red Sox	0	0	4.76	1	0	1.0	0	0	0	0	0	1	0.94
2025-05-19	Boston Red Sox	New York Mets	0	0	4.42	1	0	1.1	0	0	0	0	0	1	0.87
2025-05-20	Boston Red Sox	New York Mets	0	0	4.05	1	0	1.2	0	0	0	0	0	0	0.80
2025-05-23	Boston Red Sox	Baltimore Orioles	0	0	3.92	1	0	0.2	1	0	0	0	0	1	0.82
2025-05-24	Boston Red Sox	Baltimore Orioles	0	0	3.74	1	0	1.0	1	0	0	0	1	0	0.88
2025-05-27	Milwaukee Brewers	Boston Red Sox	0	0	3.52	1	0	1.1	0	0	0	0	1	1	0.87
2025-05-28	Milwaukee Brewers	Boston Red Sox	0	1	3.47	1	0	0.1	1	2	0	0	0	0	0.90
May	Boston Red Sox		1	3	3.46	12	0	13.0	9	7	5	1	3	7	0.92
2025-08-29	Boston Red Sox	Pittsburgh Pirates	0	0	3.33	1	0	1.0	2	0	0	0	1	1	0.99
2025-08-31	Boston Red Sox	Pittsburgh Pirates	0	0	3.55	1	0	1.0	1	1	1	1	0	2	0.99
August	Boston Red Sox		0	0	4.50	2	0	2.0	3	1	1	1	1	3	2.00
2025-09-02	Boston Red Sox	Cleveland Guardians	1	0	3.42	1	0	1.0	1	0	0	0	0	1	0.99
2025-09-05	Arizona Diamondbacks	Boston Red Sox	0	0	4.61	1	0	1.0	4	4	4	1	0	1	1.10
2025-09-09	Athletics	Boston Red Sox	0	0	4.45	1	0	1.0	2	0	0	0	0	1	1.13
2025-09-10	Athletics	Boston Red Sox	0	0	5.02	1	0	0.1	2	2	2	0	1	0	1.22
2025-09-16	Boston Red Sox	Athletics	0	0	4.85	1	0	1.0	0	0	0	0	0	0	1.18
2025-09-17	Boston Red Sox	Athletics	0	0	4.65	1	0	1.1	0	0	0	0	0	1	1.13
2025-09-19	Tampa Bay Rays	Boston Red Sox	0	0	4.50	1	0	1.0	0	0	0	0	0	2	1.09
2025-09-20	Tampa Bay Rays	Boston Red Sox	0	0	4.45	1	0	0.1	1	0	0	0	0	0	1.11
2025-09-23	Toronto Blue Jays	Boston Red Sox	0	0	4.32	1	0	1.0	0	0	0	0	0	0	1.08
2025-09-26	Boston Red Sox	Detroit Tigers	0	0	4.24	1	0	0.2	0	0	0	0	1	0	1.09
September	Boston Red Sox		1	0	6.23	10	0	8.2	10	6	6	1	2	6	1.38

Date	Home Tm	Away Tm	W	G	IP	H	R	BB	SO	WHIP
2025-08-19	Worcester Red Sox	Jacksonville Jumbo Shrimp	0	1	1.0	0	0	0	3	0.00
2025-08-22	Worcester Red Sox	Jacksonville Jumbo Shrimp	0	1	1.0	1	1	1	2	1.00
2025-08-24	Worcester Red Sox	Jacksonville Jumbo Shrimp	1	1	1.0	0	0	0	0	0.67
August	Worcester Red Sox		1	3	3.0	1	1	1	5	0.67

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	26	811	155	6	3.9	2.7	87.8	112.2	8.6	30.3	.234	.348	.253	.279	.354	36.8	25.9	4.0	2.93	3.22
2025	27	499	102	8	7.8	5.8	89.1	116.2	12.3	32.4	.234	.387	.251	.288	.327	34.3	18.2	7.3	4.24	3.43
Player		1310	257	14	5.4	3.9	88.3	116.2	10.1	31.1	.234	.363	.252	.283	.343	35.8	23.0	5.3
MLB					7.2	4.9	88.6	122.9	12.4	33.3	.245	.404	.315	.315	.368	37.0	22.2	8.4

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

Statcast Pitch Arsenal

Slaten relies on 4 pitches.

Four Seamer

(36.1%) ,

Cutter

(34.5%) ,

Curveball

(18.0%) ,

Sweeper

(11.4%) ,

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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	50.3	49.7	19.4	22.6	7.7	42.6	36.8	20.6	31.0	13.5	5.8	11.6	23.2	14.8
2025	41.2	58.8	27.5	23.5	7.8	40.2	37.3	22.5	26.5	9.8	4.9	13.7	27.5	17.6
Player	46.7	53.3	22.6	23.0	7.8	41.6	37.0	21.4	29.2	12.1	5.4	12.5	24.9	16.0
MLB	44.2	55.8	24.0	24.7	7.1	37.4	37.4	25.1	20.6	17.6	5.9	16.7	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	5.2	35.5	21.3	27.1	7.1	3.9	2.7
2025	2.0	37.3	25.5	21.6	5.9	7.8	5.8
Player	3.9	36.2	23.0	24.9	6.6	5.4	3.9
MLB	4.0	32.4	24.9	24.4	5.9	7.2	4.9

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

Similar Pitchers to Justin Slaten:

2024 - Spencer Schwellenbach

2025 - Taylor Clarke

2024 - Hoby Milner

2024 - Kevin Ginkel

2024 - Will Vest

--- 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
2025	Curveball	BOS	R	90	84.9	54.2	5.6	5.4GLV	-1.4	-15.8	5.9	5.4GLV	-3.7
2025	Cutter	BOS	R	172	92.7	24.0	-1.6	4.7GLV	2.9	7.8	-0.5	4.7GLV	2.5
2025	Sweeper	BOS	R	57	85.1	38.2	1.2	14.7GLV	1.8	-0.3	1.4	14.7GLV	0.8
2025	4-Seam Fastball	BOS	R	180	96.7	11.0	2.1	2.1ARM	-5.1	18.4	2.6	2.1ARM	-5.5
2024	Sweeper	BOS	R	200	84.0	38.7	1.0	12.1GLV	-1.2	0.1	1.4	12.1GLV	-2.0
2024	Cutter	BOS	R	306	91.5	25.0	-1.3	4.4GLV	1.8	7.6	-0.7	4.4GLV	1.7
2024	Curveball	BOS	R	68	84.3	54.6	7.1	6.0GLV	-0.5	-15.8	5.8	6.0GLV	-3.4
2024	4-Seam Fastball	BOS	R	237	96.4	10.4	2.7	5.4ARM	-1.7	19.1	3.4	5.4ARM	-2.2

! 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 %
2025	4-Seam Fastball	1.6	3	180	36.1	48	.163	.186	.230	26.4	22.9	18.0	.159	.256	.232	37.5
2025	Cutter	3.5	6	172	34.5	48	.244	.311	.258	22.9	6.3	30.0	.289	.486	.341	27.9
2025	Curveball	-3.1	-3	90	18.0	22	.286	.571	.377	31.9	22.7	11.6	.319	.542	.379	50.0
2025	Sweeper	1.5	1	57	11.4	17	.176	.294	.200	39.4	35.3	27.3	.171	.267	.187	27.3
2024	Cutter	1.4	4	306	37.7	80	.247	.351	.298	24.1	15.0	28.6	.283	.399	.313	46.2
2024	4-Seam Fastball	2.3	5	237	29.2	58	.151	.170	.206	26.6	31.0	23.1	.159	.225	.212	22.9
2024	Sweeper	-1.1	-2	200	24.7	66	.279	.459	.352	35.6	27.3	24.7	.258	.436	.334	31.1
2024	Curveball	2.0	1	68	8.4	20	.150	.150	.135	42.3	50.0	25.0	.168	.211	.163	50.0

! 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
2025	Curveball	89	84.9	78	19.4	6:45	6:30	15
2025	Cutter	172	92.7	52	8.7	11:30	10:45	45
2025	4-Seam Fastball	180	96.7	86	18.1	12:30	12:15	15
2025	Sweeper	56	85.1	49	15.8	8:00	8:45	-45
2024	Curveball	68	84.3	78	19.6	6:45	6:30	15
2024	Cutter	305	91.5	52	8.4	11:30	10:45	45
2024	4-Seam Fastball	236	96.4	96	19.6	12:45	12:30	15
2024	Sweeper	197	84.0	48	13.1	8:00	8:45	-45

! Note: Years are in reverse order.

! 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		224	811	4	9	-3	-2	9
2025		135	499	7	3	-1	-1	7
Player		359	1,310	12	12	-4	12	16

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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		224	811	3	12	-1	-2	11	3
2025		135	499	4	0	-1	-1	1	-6
Player		359	1,310	7	12	-2	7	13	-3

Plate Discipline

Season	Pitches	Zone %	Zone Swing %	Zone Contact %	Chase %	Chase Contact %	Edge %	1st Pitch Strike %	Swing %	Whiff %	Meatball %	Meatball Swing %
2024	811	51.3	71.2	83.1	34.9	44.9	39.5	63.4	53.5	29.0	8.1	72.7
2025	499	54.7	72.9	79.4	31.0	51.4	43.9	61.0	53.9	27.9	8.6	76.7
Player	1,310	52.6	71.8	81.6	33.5	47.1	41.1	62.5	53.7	28.6	8.3	74.3
MLB		48.9	67.0	82.5	28.4	58.0	42.7	61.1	47.3	25.0	7.3	76.3

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

Percentile Rankings

Year	xwOBA / xERA	xBA	xSLG	xISO	xOBP	Brl	Brl%	EV	Hard Hit%	K%	BB%	Whiff%	Chase Rate	FB Velo	FB Spin	CB Spin	Extension
2024	83	56	75	85	88	96	96	76	67	72	97	76	97	86	84	71	77
2025														86	89	75	86

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Expected Home Runs

Adjusted

Year	Avg HR Trot	Actual HR	xHR	Doubters	Mostly Gone	No Doubters	No Doubter %
2024	25.90	4	4.4	3	3	2	50.0
2025	26.30	3	2.7	1	2	1	33.3
Player	26.10	7	7.0	4	5	3	42.9

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	Doubters	Mostly Gone	No Doubters	No Doubter %
2024	25.90	4	4.0	3	3	2	50.0
2025	26.30	3	2.8	2	2	1	33.3
Player	26.10	7	6.9	5	5	3	42.9

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.

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Expected Home Runs by Park

Adjusted

Year	HR
2024	4	4	4	4	4	4	5	4	4	3	5	4	6	3	4	3	4	3	4	6	5	6	7	5	3	5	4	5	5	4	4
2025	3	3	1	3	3	3	3	3	3	2	3	2	2	3	3	3	3	3	3	3	2	3	3	3	2	2	3	3	2	3	2
Player	7	7	5	7	7	7	8	7	7	5	8	6	8	6	7	6	7	6	7	9	7	9	10	8	5	7	7	8	7	7	6

Standard

Year	HR
2024	4	4	5	4	4	4	5	3	4	2	4	4	6	3	5	3	3	3	5	5	4	7	5	4	3	3	3	3	5	4	4
2025	3	3	1	3	3	3	3	3	3	2	3	2	4	3	3	3	3	3	3	3	3	4	3	3	3	3	3	1	3	3	2
Player	7	7	6	7	7	7	8	6	7	4	7	6	10	6	8	6	6	6	8	8	7	11	8	7	6	6	6	4	8	7	6

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Year to Year Changes

	2025	+/-		2024
Results
BA	.214	-.009	↓	.223
xBA	.234	.000		.234
OBP	.270	+.011	↑	.259
xOBP	.288	+.015	↑	.273
SLG	.310	-.008	↓	.318
xSLG	.387	+.039	↑	.348
ISO	.095	.000		.095
xISO	.154	+.039	↑	.115
BABIP	.242	-.043	↓	.285
wOBA	.251	-.002	↓	.253
xwOBA	.288	+.009	↑	.279
wOBACON	.278	-.038	↓	.316
xwOBACON	.327	-.027	↓	.354
BACON	.265	-.038	↓	.303
xBACON	.289	-.035	↓	.324
Statcast Hit Metrics
Hard Hit %	34.3	-2.5	↓	36.8
Avg Exit Velocity	89.1	+1.3	↑	87.8
Launch Angle Sweet-Spot %	32.4	+2.1	↑	30.3
Barrel %	7.8	+3.9	↑	3.9
Avg Launch Angle	12.3	+3.7	↑	8.6
Statcast Bat Tracking
Bat Speed	71.3	+0.2	↑	71.1
Attack Angle	9°	-2°	↓	11°
Ideal Attack Angle %	54.0	+3.4	↑	50.6
Attack Direction	-1°	+2°	↑	-2°
Swing Path - Tilt	33°	0°	↑	32°
Swing Length	7.2	-0.1	↓	7.3
Statcast Pitch Metrics
Fastball Velocity	94.8	+1.2	↑	93.6
Breaking Velocity	85.0	+0.9	↑	84.1
Offspeed Velocity	0.0	--		--
Batted Ball Results
Barrels	8	+2	↑	6
Popup %	7.8	+0.1	↑	7.7
Flyball %	27.5	+8.1	↑	19.4
Line Drive %	23.5	+0.9	↑	22.6
Groundball %	41.2	-9.1	↓	50.3
Pull %	40.2	-2.4	↓	42.6
Straight Away %	37.3	+0.5	↑	36.8
Opposite Field %	22.5	+1.9	↑	20.6
Weak Contact %	2.0	-3.2	↓	5.2
Pull Airball %	13.7	+2.1	↑	11.6
Topped Contact %	37.3	+1.8	↑	35.5
Under Contact %	25.5	+4.2	↑	21.3
Flare/Burner Contact %	21.6	-5.5	↓	27.1
Solid Contact %	5.9	-1.2	↓	7.1
HR/FB %	10.7	-2.6	↓	13.3
Popups	8	-4	↓	12
Flyballs	28	-2	↓	30
Line Drives	24	-11	↓	35
Groundballs	42	-36	↓	78
Plate Discipline
In Zone %	54.7	+3.4	↑	51.3
Out of Zone %	45.3	-3.4	↓	48.7
Edge %	43.9	+4.4	↑	39.5
Zone Swing %	72.9	+1.7	↑	71.2
Out of Zone Swing %	31.0	-3.9	↓	34.9
In Zone Contact %	79.4	-3.7	↓	83.1
Out of Zone Contact %	51.4	+6.5	↑	44.9
Whiff %	27.9	-1.1	↓	29.0
First Strike %	61.0	-2.4	↓	63.4
First Pitch Swing %	38.2	+0.3	↑	37.9
Swing %	53.9	+0.4	↑	53.5
Meatball Swing %	76.7	+4.0	↑	72.7
Meatball %	8.6	+0.5	↑	8.1
Zone Swing & Miss %	20.6	+3.7	↑	16.9
Out of Zone Swing & Miss %	48.6	-6.5	↓	55.1
In Zone	273	-143	↓	416
Out of Zone	226	-169	↓	395
Edge	219	-101	↓	320
In Zone Swings	199	-97	↓	296
Out of Zone Swings	70	-68	↓	138
In Zone Swing & Misses	41	-9	↓	50
Out of Zone Swing & Misses	34	-42	↓	76
Basic
Pitches	499	-312	↓	811
PA	137	-87	↓	224
AB	126	-85	↓	211
Hits	27	-20	↓	47
Singles	21	-15	↓	36
Doubles	3	-3	↓	6
Triples	0	-1	↓	1
Home Runs	3	-1	↓	4
Walks	10	+1	↑	9
Strikeouts	25	-33	↓	58
K%	18.2	-7.7	↓	25.9
BB%	7.3	+3.3	↑	4.0
HBP	0	-2	↓	2
Batted Balls	102	-53	↓	155
Number of Fastballs	352	-191	↓	543
Number of Offspeed	0	0		0
Number of Breaking	90	+22	↑	68

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Statcast Fielder Positioning

				vs RHH			vs LHH
Year	Alignment Type	PA	wOBA	PA	Total	%	PA	Total	%
2024	Shades	224	.253	119	5	4.2	105	71	67.6
2025	Shades	135	.251	76	1	1.3	59	39	66.1

! 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		213	16.5	13.6%	0.5%	94	18.0	2.1%	0.0%
2025		121	15.6	39.7%	0.8%	77	16.6	18.2%	0.0%

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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		--	--	--	--	--	--	--	--	--	55	--	--	--	--	--	--	--	--
2025		--	--	--	--	--	--	--	--	--	34	--	--	--	--	--	--	--	--
Player		--	--	--	--	--	--	--	--	--	89	--	--	--	--	--	--	--	--

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Statcast Fielding Breakdown

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