Mason McGwire Stats: Statcast, Visuals & Advanced Metrics

P | Bats/Throws: R/R | 6' 4" 190 lbs | Age: 22

Draft: 2022 | Rd. 8, No. 233, Chicago Cubs | Capistrano Valley HS

MLB Pipeline Rank

	W	L	ERA	G	GS	SV	IP	SO	WHIP
2026	2	4	4.59	13	11	1	49	50	1.43
Career Minors	5	16	5.56	49	34	1	155.1	161	1.63

	G	W-L	ERA	IP	SO	WHIP
2026	13	2-4	4.59	49	50	1.43
Career Minors	49	5-16	5.56	155.1	161	1.63

Standard Splits Game Logs

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
2023	ACL Cubs	ACL	ROK	1	6	9.42	11	10	0	35.1	48	44	37	5	29	36	2.18
2024	Myrtle Beach Pelicans	CAR	A	0	4	5.71	15	8	0	41.0	40	29	26	4	34	30	1.80
2026	3 Teams		Minors	4	6	3.76	23	16	1	79.0	71	38	33	7	31	95	1.29
2026	Myrtle Beach Pelicans	CAR	A	2	2	2.40	10	5	0	30.0	22	12	8	3	10	45	1.07
2026	South Bend Cubs	MID	A+	1	2	4.91	8	6	1	29.1	27	17	16	3	14	27	1.40
2026	Tri-City Dust Devils	NWL	A+	1	2	4.12	5	5	0	19.2	22	9	9	1	7	23	1.47
2026	2 Teams		A+	2	4	4.59	13	11	1	49.0	49	26	25	4	21	50	1.43
	ACL Cubs	ACL	ROK	1	6	9.42	11	10	0	35.1	48	44	37	5	29	36	2.18
	2 Teams		A+	2	4	4.59	13	11	1	49.0	49	26	25	4	21	50	1.43
	Myrtle Beach Pelicans	CAR	A	2	6	4.31	25	13	0	71.0	62	41	34	7	44	75	1.49
Career Minors	4 Teams			5	16	5.56	49	34	1	155.1	159	111	96	16	94	161	1.63

Standard Minor League Fielding Statistics

Season	Tm	LG	L	POS	G	GS	INN	TC	PO	A	E	DP	FPCT%
2023	ACL Cubs	ACL	ROK	P	11	10	35.1	4	2	1	1	1	.750
2024	Myrtle Beach Pelicans	CAR	A	P	15	8	41.0	10	4	6	0	2	1.000
2026	3 Teams		Minors	P	23	16	79.0	7	0	5	2	0	.714
2026	Myrtle Beach Pelicans	CAR	A	P	10	5	30.0	2	0	2	0	0	1.000
2026	South Bend Cubs	MID	A+	P	8	6	29.1	4	0	3	1	0	.750
2026	Tri-City Dust Devils	NWL	A+	P	5	5	19.2	1	0	0	1	0	.000
2026	2 Teams		A+	P	13	11	49.0	5	0	3	2	0	.600
	ACL Cubs	ACL	ROK	P	11	10	35.1	4	2	1	1	1	.750
	2 Teams		A+	P	13	11	49.0	5	0	3	2	0	.600
	Myrtle Beach Pelicans	CAR	A	P	25	13	71.0	12	4	8	0	2	1.000
Career Minors	4 Teams			P	49	34	155.1	21	6	12	3	3	.857

Scouting Report

2026

The son of legendary slugger Mark McGwire, Mason signed with the Cubs as a 2022 eighth-rounder out of a California high school. He struggled to throw strikes in his first two pro seasons before missing all of 2025 with a partial elbow tear that didn't require surgery. He has returned this year with improved stuff and control, earning a promotion to High-A in late May, then getting dealt to the Angels along with Moisés Ballesteros at the Trade Deadline for Ryan Zeferjahn.

McGwire's most effective pitch is a 78-82 mph curveball with downer break, though he only throws it about 10 percent of the time. He leans heavily on a 92-96 mph fastball that tops out at 99 with carry and armside run. A decent upper-80s slider with tight break is his most-used secondary offering, and he dabbles with a mid-80 splitter as a change of pace.

McGwire works out of a simple delivery with good extension and a low release height that provide deception. After walking 17 percent of the batters he faced in his first two years as a pro, he has halved that rate in 2026. His improved control and command enhance his chances of becoming a back-of-the-rotation starter.

Awards

Futures Game Selection

Year	Team
2026

CAR Pitcher of the Week

Week	Team
04/19/2026

Transactions

Team	Date	Transaction
	08/04/2026	Tri-City Dust Devils activated RHP Mason McGwire.
	08/03/2026	Los Angeles Angels traded RHP Ryan Zeferjahn to Chicago Cubs for C Moisés Ballesteros and RHP Mason McGwire.
	08/03/2026	RHP Mason McGwire assigned to Tri-City Dust Devils.
	07/14/2026	South Bend Cubs activated RHP Mason McGwire.
	07/11/2026	National League Futures activated RHP Mason McGwire.
	07/11/2026	South Bend Cubs placed RHP Mason McGwire on the temporarily inactive list.
	06/17/2026	South Bend Cubs activated RHP Mason McGwire from the Development List.
	06/11/2026	South Bend Cubs transferred RHP Mason McGwire to the Development List.
	05/26/2026	RHP Mason McGwire assigned to South Bend Cubs from Myrtle Beach Pelicans.
	11/06/2025	Myrtle Beach Pelicans activated RHP Mason McGwire from the 60-day injured list.
	03/23/2025	Myrtle Beach Pelicans placed RHP Mason McGwire on the 60-day injured list.
	09/20/2024	Myrtle Beach Pelicans activated RHP Mason McGwire from the 7-day injured list.
	09/05/2024	Myrtle Beach Pelicans placed RHP Mason McGwire on the 7-day injured list.
	08/20/2024	Myrtle Beach Pelicans activated RHP Mason McGwire.
	08/04/2024	Myrtle Beach Pelicans transferred RHP Mason McGwire to the Development List.
	07/21/2024	Myrtle Beach Pelicans placed RHP Mason McGwire on the temporarily inactive list.
	05/01/2024	Myrtle Beach Pelicans activated RHP Mason McGwire.
	04/24/2024	Myrtle Beach Pelicans transferred RHP Mason McGwire to the Development List.
	04/04/2024	RHP Mason McGwire assigned to Myrtle Beach Pelicans from ACL Cubs.
	06/05/2023	ACL Cubs activated RHP Mason McGwire.
	12/01/2022	RHP Mason McGwire assigned to ACL Cubs.
	07/23/2022	Chicago Cubs signed RHP Mason McGwire.
	02/03/2022	RHP Mason McGwire and assigned to Home Team.
	07/13/2021	PG National 11 - Vegas Gold activated RHP Mason McGwire.

Platoon Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP	AVG	OBP	SLG	OPS
3 Teams	Minors	vs Left				23			38.0	175	41			5	20	45	1.61	.279	.385	.463	.848
3 Teams	Minors	vs Right				22			40.0	160	30			2	11	50	1.03	.208	.270	.313	.583

Monthly Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP	AVG	OBP	SLG	OPS
Myrtle Beach Pelicans	Single-A	April	2	1	1.50	5	2	0	12.0	46	5	4	2	1	5	18	0.83	.128	.239	.256	.495
2 Teams	Minors	May	0	1	2.57	6	3	1	21.0	87	18	8	6	2	5	33	1.10	.222	.276	.395	.671
South Bend Cubs	High-A	June	1	1	5.25	3	3	0	12.0	52	12	8	7	0	6	11	1.50	.279	.360	.302	.662
South Bend Cubs	High-A	July	0	1	5.65	4	3	0	14.1	61	14	9	9	3	8	10	1.53	.275	.393	.549	.942
Tri-City Dust Devils	High-A	August	1	2	4.02	4	4	0	15.2	69	18	7	7	1	5	16	1.47	.295	.362	.410	.772
Tri-City Dust Devils	High-A	September	0	0	4.50	1	1	0	4.0	20	4	2	2	0	2	7	1.50	.250	.400	.313	.713
2 Teams	Minors	First Half	3	2	2.41	13	7	1	41.0	166	28	16	11	3	14	58	1.02	.190	.268	.327	.595
2 Teams	Minors	Second Half	1	4	5.21	10	9	0	38.0	169	43	22	22	4	17	37	1.58	.299	.391	.451	.842

Baserunner Splits

Team	L	Type	G	IP	BF	H	HR	BB	SO	WHIP	AVG	OBP	SLG	OPS
3 Teams	Minors	Bases Empty	22	41.2	183	41	5	13	53	1.30	.244	.306	.423	.729
3 Teams	Minors	Bases Loaded	8	3.1	12	1	0	3	2	1.20	.125	.333	.250	.583
3 Teams	Minors	Runner at 1st	20	12.0	43	9	0	4	9	1.08	.243	.349	.270	.619
3 Teams	Minors	Runners at 1st & 2nd	14	5.2	23	6	1	1	4	1.24	.300	.364	.500	.864
3 Teams	Minors	Runners at 1st & 3rd	11	4.0	15	3	0	1	5	1.00	.250	.286	.250	.536
3 Teams	Minors	Runner at 2nd	15	7.2	38	8	1	6	14	1.83	.267	.421	.433	.854
3 Teams	Minors	Runners at 2nd & 3rd	9	2.0	10	1	0	2	5	1.50	.125	.300	.125	.425
3 Teams	Minors	Runner at 3rd	8	2.1	11	2	0	1	3	1.29	.250	.364	.375	.739
3 Teams	Minors	Scoring Position	19	25.0	109	21	2	14	33	1.40	.244	.364	.372	.736

Game Type Splits

Team	L	Type	W	L	ERA	G	GS	SV	IP	BF	H	R	ER	HR	BB	SO	WHIP	AVG	OBP	SLG	OPS
3 Teams	Minors	Home Games	1	2	2.82	10	6	1	38.1	153	29	12	12	1	8	52	0.97	.207	.268	.264	.532
3 Teams	Minors	Away Games	3	4	4.65	13	10	0	40.2	182	42	26	21	6	23	43	1.60	.278	.383	.503	.886
Myrtle Beach Pelicans	Single-A	Day Games	0	1	4.50	2	2	0	8.0	38	11	6	4	1	2	14	1.63	.314	.368	.571	.939
3 Teams	Minors	Night Games	4	5	3.68	21	14	1	71.0	297	60	32	29	6	29	81	1.25	.234	.325	.363	.688
3 Teams	Minors	Leading Off Inning				22			16.1	77	18			3	7	23	1.53	.265	.351	.485	.836
Myrtle Beach Pelicans	Single-A	Late / Close				2			1.0	5	1			1	0	2	1.00	.250	.200	1.000	1.200

Outs Splits

Team	L	Type	G	IP	BF	H	HR	BB	SO	WHIP	AVG	OBP	SLG	OPS
3 Teams	Minors	No Outs	23	27.0	122	28	3	12	37	1.48	.269	.364	.433	.797
3 Teams	Minors	One Out	23	26.2	108	20	2	7	30	1.01	.211	.280	.347	.627
3 Teams	Minors	Two Outs	23	25.0	105	23	2	12	28	1.40	.250	.343	.380	.723

Inning Splits

Team	L	Type	ERA	G	IP	BF	H	R	ER	HR	BB	SO	WHIP	AVG	OBP	SLG	OPS
3 Teams	Minors	First Inning	3.94	16	16.0	68	9	7	7	2	10	21	1.19	.164	.324	.345	.669
3 Teams	Minors	Second Inning	7.31	16	16.0	78	21	13	13	1	9	17	1.88	.328	.421	.453	.874
3 Teams	Minors	Third Inning	3.68	15	14.2	63	18	8	6	2	4	15	1.50	.316	.365	.526	.891
3 Teams	Minors	Fourth Inning	2.13	14	12.2	50	9	4	3	1	3	14	0.95	.200	.280	.333	.613
3 Teams	Minors	Fifth Inning	1.50	6	6.0	23	5	1	1	0	2	5	1.17	.238	.304	.238	.542
2 Teams	Minors	Sixth Inning	0.00	4	3.2	14	2	0	0	0	1	5	0.82	.154	.214	.231	.445
2 Teams	Minors	Seventh Inning	1.80	5	5.0	18	4	1	1	1	0	6	0.80	.222	.222	.389	.611
2 Teams	Minors	Eighth Inning	4.50	4	4.0	18	3	4	2	0	2	9	1.25	.200	.278	.333	.611
South Bend Cubs	High-A	Ninth Inning	0.00	1	1.0	3	0	0	0	0	0	3	0.00	.000	.000	.000	.000

Date	Home Tm	Away Tm	W	L	ERA	G	GS	SV	IP	H	R	ER	HR	BB	SO	WHIP
2026-04-07	Columbia Fireflies	Myrtle Beach Pelicans	1	0	0.00	1	0	0	2.0	1	0	0	0	3	3	2.00
2026-04-11	Columbia Fireflies	Myrtle Beach Pelicans	0	1	3.00	1	0	0	1.0	1	3	1	0	2	2	2.33
2026-04-14	Myrtle Beach Pelicans	Kannapolis Cannon Ballers	1	0	1.50	1	0	0	3.0	1	0	0	0	0	5	1.33
2026-04-19	Myrtle Beach Pelicans	Kannapolis Cannon Ballers	0	0	0.90	1	1	0	4.0	1	0	0	0	0	5	0.90
2026-04-25	Fayetteville Woodpeckers	Myrtle Beach Pelicans	0	0	1.50	1	1	0	2.0	1	1	1	1	0	3	0.83
April	Myrtle Beach Pelicans		2	1	1.50	5	2	0	12.0	5	4	2	1	5	18	0.83
2026-05-01	Myrtle Beach Pelicans	Columbia Fireflies	0	0	1.69	1	1	0	4.0	1	1	1	0	2	4	0.81
2026-05-07	Hickory Crawdads	Myrtle Beach Pelicans	0	0	1.80	1	1	0	4.0	6	3	1	0	1	7	1.00
2026-05-13	Myrtle Beach Pelicans	Augusta GreenJackets	0	0	1.85	1	0	0	4.1	3	1	1	1	0	8	0.95
2026-05-19	Kannapolis Cannon Ballers	Myrtle Beach Pelicans	0	0	1.73	1	0	0	1.2	2	0	0	0	1	1	1.00
2026-05-24	Kannapolis Cannon Ballers	Myrtle Beach Pelicans	0	1	2.40	1	1	0	4.0	5	3	3	1	1	7	1.07
2026-05-30	South Bend Cubs	Fort Wayne TinCaps	0	0	0.00	1	0	1	3.0	1	0	0	0	0	6	0.33
May	South Bend Cubs		0	0	0.00	1	0	1	3.0	1	0	0	0	0	6	0.33
May	Myrtle Beach Pelicans		0	1	3.00	5	3	0	18.0	17	8	6	2	5	27	1.22
2026-06-05	South Bend Cubs	Quad Cities River Bandits	1	0	2.25	1	1	0	5.0	3	3	2	0	1	4	0.63
2026-06-18	Fort Wayne TinCaps	South Bend Cubs	0	0	2.45	1	1	0	3.0	2	1	1	0	3	3	0.91
2026-06-25	South Bend Cubs	Quad Cities River Bandits	0	1	4.20	1	1	0	4.0	7	4	4	0	2	4	1.27
June	South Bend Cubs		1	1	5.25	3	3	0	12.0	12	8	7	0	6	11	1.50
2026-07-01	Beloit Sky Carp	South Bend Cubs	0	0	4.00	1	1	0	3.0	3	1	1	0	3	2	1.39
2026-07-07	Cedar Rapids Kernels	South Bend Cubs	0	0	3.68	1	1	0	4.0	3	1	1	0	1	3	1.32
2026-07-17	South Bend Cubs	Peoria Chiefs	0	0	3.46	1	0	0	4.0	3	1	1	0	0	4	1.23
2026-07-28	Lake County Captains	South Bend Cubs	0	1	4.91	1	1	0	3.1	5	6	6	3	4	1	1.40
July	South Bend Cubs		0	1	5.65	4	3	0	14.1	14	9	9	3	8	10	1.53
2026-08-08	Tri-City Dust Devils	Hillsboro Hops	0	0	4.59	1	1	0	4.0	4	1	1	0	1	4	1.38
2026-08-15	Vancouver Canadians	Tri-City Dust Devils	0	1	5.00	1	1	0	2.2	6	3	3	1	1	1	1.47
2026-08-22	Tri-City Dust Devils	Everett AquaSox	0	1	4.95	1	1	0	4.0	4	2	2	0	1	5	1.45
2026-08-29	Hillsboro Hops	Tri-City Dust Devils	1	0	4.60	1	1	0	5.0	4	1	1	0	2	6	1.42
August			1	2	4.02	4	4	0	15.2	18	7	7	1	5	16	1.47
2026-09-04	Tri-City Dust Devils	Vancouver Canadians	0	0	4.59	1	1	0	4.0	4	2	2	0	2	7	1.43
September			0	0	4.50	1	1	0	4.0	4	2	2	0	2	7	1.50