Gregory Santos

Position: Relief Pitcher

Bats: Right • Throws: Right

6-2, 190lb (188cm, 86kg)

Team: Seattle Mariners (majors)

Born: August 28, 1999 in San Cristobal, Dominican Republic do

Rookie Status: Exceeded rookie limits during 2023 season

2025 Contract Status: Pre-Arb Eligible

Service Time (01/2025): 2.055 • Arb Eligible: 2026 • Free Agent: 2029

Full Name: Gregory Omar Santos

View Player Info from the B-R Bullpen

Become a Stathead & surf this site ad-free.

SUMMARY

2024

Career

WAR

-0.1

0.5

ERA

4.91

4.08

7.1

79.1

WHIP

1.091

1.349

Player News

Hide Majors

Hide Minors

Hide Foreign

Hide Other

Register Pitching

Register Pitching
Year	Age	AgeDif	Tm	Lg	Lev	Aff	W	L	W-L%	ERA	RA9	G	GS	GF	CG	SHO	SV	IP	H	R	ER	HR	BB	IBB	SO	HBP	BK	WP	BF	WHIP	H9	HR9	BB9	SO9	SO/W
2016	16	-3.0	Red Sox 2	DOSL	FRk	BOS	3	3	.500	4.17	5.93	16	10	2	0	0	1	41.0	40	27	19	1	26	0	25	6	2	4	188	1.610	8.8	0.2	5.7	5.5	0.96
2017	17		2 Teams	DOSL	FRk	BOS-SFG	3	0	1.000	1.29	2.02	12	12	0	0	0	0	49.0	43	11	7	2	20	0	41	1	1	8	206	1.286	7.9	0.4	3.7	7.5	2.05
2017	17	-1.7	Red Sox	DOSL	FRk	BOS	2	0	1.000	0.89	1.78	8	8	0	0	0	0	30.1	22	6	3	0	15	0	24	1	0	3	123	1.220	6.5	0.0	4.5	7.1	1.60
2017	17	-1.7	Giants	DOSL	FRk	SFG	1	0	1.000	1.93	2.41	4	4	0	0	0	0	18.2	21	5	4	2	5	0	17	0	1	5	83	1.393	10.1	1.0	2.4	8.2	3.40
2018	18	-3.3	Salem-Keizer	NORW	A-	SFG	2	5	.286	4.53	6.16	12	12	0	0	0	0	49.2	64	34	25	3	15	0	46	1	1	9	227	1.591	11.6	0.5	2.7	8.3	3.07
2019	19	-2.8	Augusta	SALL	A	SFG	1	5	.167	2.86	4.15	8	8	0	0	0	0	34.2	34	16	11	4	9	0	26	0	0	1	143	1.240	8.8	1.0	2.3	6.8	2.89

2021	21	-6.4	Sacramento	AAAW	AAA	SFG	1	1	.500	5.17	5.17	14	0	1	0	0	0	15.2	16	9	9	1	9	0	15	3	0	3	73	1.596	9.2	0.6	5.2	8.6	1.67
2021	21	-2.3	Scottsdale	AZFL	Fal		0	1	.000	4.15	4.15	10	0	7	0	0	0	13.0	13	6	6	0	5	0	12	0	0	4	53	1.385	9.0	0.0	3.5	8.3	2.40
2021	21	-7.9	SFG	NL	Maj	SFG	0	2	.000	22.50	27.00	3	0	1	0	0	0	2.0	5	6	5	3	2	0	3	0	0	0	13	3.500	22.5	13.5	9.0	13.5	1.50
2022	22		2 Teams	2 Lgs	AAA-Rk	SFG	1	2	.333	4.63	5.66	35	2	3	0	0	1	35.0	31	22	18	4	20	0	37	3	1	3	156	1.457	8.0	1.0	5.1	9.5	1.85
2022	22	-5.2	Sacramento	PCL	AAA	SFG	1	2	.333	4.91	6.00	33	0	3	0	0	1	33.0	29	22	18	4	20	0	34	3	1	2	148	1.485	7.9	1.1	5.5	9.3	1.70
2022	22	0.8	Giants Black	ACL	Rk	SFG	0	0		0.00	0.00	2	2	0	0	0	0	2.0	2	0	0	0	0	0	3	0	0	1	8	1.000	9.0	0.0	0.0	13.5
2022	22	-7.2	SFG	NL	Maj	SFG	0	0		4.91	4.91	2	0	1	0	0	0	3.2	3	2	2	0	3	0	2	0	0	0	17	1.636	7.4	0.0	7.4	4.9	0.67
2022-23	22	-7.7	Estrellas	DOWL	FgW		1	1	.500	4.09	5.73	11	0	0	0	0	0	11.0	12	7	5	1	3	0	10	1	0	2	46	1.364	9.8	0.8	2.5	8.2	3.33
2023	23	-5.7	CHW	AL	Maj	CHW	2	2	.500	3.39	3.93	60	0	17	0	0	5	66.1	69	29	25	2	17	1	66	5	1	2	289	1.296	9.4	0.3	2.3	9.0	3.88
2024	24		2 Teams	2 Lgs	AAA-A+	SEA	0	0		1.23	1.23	8	0	0	0	0	0	7.1	3	1	1	0	7	0	8	0	0	0	31	1.364	3.7	0.0	8.6	9.8	1.14
2024	24	-3.5	Tacoma	PCL	AAA	SEA	0	0		1.42	1.42	7	0	0	0	0	0	6.1	3	1	1	0	7	0	7	0	0	0	28	1.579	4.3	0.0	9.9	9.9	1.00
2024	24	0.9	Everett	NORW	A+	SEA	0	0		0.00	0.00	1	0	0	0	0	0	1.0	0	0	0	0	0	0	1	0	0	0	3	0.000	0.0	0.0	0.0	9.0
2024	24	-5.0	SEA	AL	Maj	SEA	0	1	.000	4.91	4.91	8	0	1	0	0	0	7.1	7	4	4	0	1	0	6	1	1	0	31	1.091	8.6	0.0	1.2	7.4	6.00
Year	Age	AgeDif	Tm	Lg	Lev	Aff	W	L	W-L%	ERA	RA9	G	GS	GF	CG	SHO	SV	IP	H	R	ER	HR	BB	IBB	SO	HBP	BK	WP	BF	WHIP	H9	HR9	BB9	SO9	SO/W
Majors (4 seasons)					Majors		2	5	.286	4.08	4.65	73	0	20	0	0	5	79.1	84	41	36	5	23	1	77	6	2	2	350	1.349	9.5	0.6	2.6	8.7	3.35
Minors (7 seasons)					Minors		11	16	.407	3.49	4.65	105	44	6	0	0	2	232.1	231	120	90	15	106	0	198	14	5	28	1024	1.451	8.9	0.6	4.1	7.7	1.87
Foreign (1 season)					Foreign		1	1	.500	4.09	5.73	11	0	0	0	0	0	11.0	12	7	5	1	3	0	10	1	0	2	46	1.364	9.8	0.8	2.5	8.2	3.33
Other (1 season)					Other		0	1	.000	4.15	4.15	10	0	7	0	0	0	13.0	13	6	6	0	5	0	12	0	0	4	53	1.385	9.0	0.0	3.5	8.3	2.40
All Levels (8 Seasons)							14	23	.378	3.67	4.67	199	44	33	0	0	7	335.2	340	174	137	21	137	1	297	21	7	36	1473	1.421	9.1	0.6	3.7	8.0	2.17

AAA (3 seasons)					Minors		2	3	.400	4.58	5.24	54	0	4	0	0	1	55.0	48	32	28	5	36	0	56	6	1	5	249	1.527	7.9	0.8	5.9	9.2	1.56
A+ (1 season)					Minors		0	0		0.00	0.00	1	0	0	0	0	0	1.0	0	0	0	0	0	0	1	0	0	0	3	0.000	0.0	0.0	0.0	9.0
A (1 season)					Minors		1	5	.167	2.86	4.15	8	8	0	0	0	0	34.2	34	16	11	4	9	0	26	0	0	1	143	1.240	8.8	1.0	2.3	6.8	2.89
A- (1 season)					Minors		2	5	.286	4.53	6.16	12	12	0	0	0	0	49.2	64	34	25	3	15	0	46	1	1	9	227	1.591	11.6	0.5	2.7	8.3	3.07
Rk (1 season)					Minors		0	0		0.00	0.00	2	2	0	0	0	0	2.0	2	0	0	0	0	0	3	0	0	1	8	1.000	9.0	0.0	0.0	13.5
FRk (2 seasons)					Minors		6	3	.667	2.60	3.80	28	22	2	0	0	1	90.0	83	38	26	3	46	0	66	7	3	12	394	1.433	8.3	0.3	4.6	6.6	1.43