Justin Martínez

Position: Relief Pitcher

Bats: Right • Throws: Right

6-3, 180lb (190cm, 81kg)

Team: Arizona Diamondbacks (majors, 60-day IL)

Born: July 30, 2001 in Bonao, Dominican Republic do

Rookie Status: Exceeded rookie limits during 2024 season

2026 Contract Status: Signed thru 2029, 5 yrs/$18M (25-29) & 30-32 team option

Service Time (01/2026): 2.024 • Free Agent: 2030

Agents: Nova Sports Agency

Full Name: Justin Martinez

Instagram: @justinmartinez._

View Player Info from the B-R Bullpen

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SUMMARY

Career

WAR

1.5

ERA

3.77

98.0

127

WHIP

1.408

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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
2018	16		2 Teams	DOSL	FRk	ARI	0	5	.000	7.57	11.45	15	12	0	0	0	0	44.0	51	56	37	3	38	0	30	11	1	24	232	2.023	10.4	0.6	7.8	6.1	0.79
2018	16	-2.4	Diamondbacks 1	DOSL	FRk	ARI	0	2	.000	7.33	10.80	7	7	0	0	0	0	23.1	26	28	19	2	20	0	15	6	1	18	122	1.971	10.0	0.8	7.7	5.8	0.75
2018	16	-2.4	Diamondbacks 2	DOSL	FRk	ARI	0	3	.000	7.84	12.19	8	5	0	0	0	0	20.2	25	28	18	1	18	0	15	5	0	6	110	2.081	10.9	0.4	7.8	6.5	0.83
2019	17		3 Teams	3 Lgs	FRk-Rk	ARI	1	3	.250	2.89	4.02	18	10	3	0	0	1	56.0	42	25	18	0	37	0	78	8	2	23	256	1.411	6.8	0.0	5.9	12.5	2.11
2019	17	-3.6	Diamondbacks	ARIZ	Rk	ARI	0	1	.000	3.24	5.40	6	2	2	0	0	1	16.2	12	10	6	0	11	0	23	2	0	9	76	1.380	6.5	0.0	5.9	12.4	2.09
2019	17	-4.5	Missoula	PION	Rk	ARI	0	0		0.00	2.25	3	0	1	0	0	0	4.0	1	1	0	0	4	0	7	1	0	4	20	1.250	2.3	0.0	9.0	15.8	1.75
2019	17	-1.3	Diamondbacks 2	DOSL	FRk	ARI	1	2	.333	3.06	3.57	9	8	0	0	0	0	35.1	29	14	12	0	22	0	48	5	2	10	160	1.443	7.4	0.0	5.6	12.2	2.18

2021	19	-2.9	Visalia	LAW	A	ARI	1	3	.250	6.65	7.83	7	7	0	0	0	0	23.0	25	20	17	1	15	0	24	3	2	5	107	1.739	9.8	0.4	5.9	9.4	1.60
2022	20		5 Teams	4 Lgs	A+-AAA-AA-Rk	ARI	3	3	.500	3.32	4.26	20	0	2	0	0	1	38.0	32	18	14	2	22	0	62	4	2	2	169	1.421	7.6	0.5	5.2	14.7	2.82
2022	20	-7.2	Reno	PCL	AAA	ARI	1	0	1.000	3.86	5.79	3	0	0	0	0	0	4.2	3	3	2	0	5	0	8	1	0	0	24	1.714	5.8	0.0	9.6	15.4	1.60
2022	20	-4.5	Amarillo	TL	AA	ARI	1	0	1.000	4.15	4.15	2	0	0	0	0	0	4.1	6	2	2	0	2	0	8	1	1	0	22	1.846	12.5	0.0	4.2	16.6	4.00
2022	20	-3.2	Hillsboro	NORW	A+	ARI	1	2	.333	2.67	3.33	13	0	2	0	0	1	27.0	21	10	8	1	14	0	44	1	1	2	114	1.296	7.0	0.3	4.7	14.7	3.14
2022	20	-1.2	Diamondbacks Red	ACL	Rk	ARI	0	0		0.00	0.00	1	0	0	0	0	0	1.0	0	0	0	0	1	0	1	0	0	0	3	1.000	0.0	0.0	9.0	9.0	1.00
2022	20	-1.2	Diamondbacks Black	ACL	Rk	ARI	0	1	.000	18.00	27.00	1	0	0	0	0	0	1.0	2	3	2	1	0	0	1	1	0	0	6	2.000	18.0	9.0	0.0	9.0
2022	20	-3.2	Salt River	AZFL	Fal		0	0		2.35	2.35	7	0	3	0	0	3	7.2	3	2	2	1	5	0	13	1	1	0	33	1.043	3.5	1.2	5.9	15.3	2.60
2023	21	-6.3	Reno	PCL	AAA	ARI	2	1	.667	4.20	4.74	47	0	26	0	0	9	49.1	33	26	23	3	48	1	67	3	0	6	226	1.642	6.0	0.5	8.8	12.2	1.40
2023	21	-8.2	ARI	NL	Maj	ARI	0	0		12.60	12.60	10	0	4	0	0	1	10.0	13	14	14	2	11	1	14	2	0	1	57	2.400	11.7	1.8	9.9	12.6	1.27
2023-24	21	-9.0	Aguilas	DOWL	FgW		1	0	1.000	0.00	0.00	1	0	1	0	0	0	1.0	0	0	0	0	0	0	2	0	0	0	3	0.000	0.0	0.0	0.0	18.0
2024	22	-5.5	Reno	PCL	AAA	ARI	0	0		2.70	6.75	6	0	4	0	0	3	6.2	4	5	2	1	3	0	14	1	0	0	28	1.050	5.4	1.4	4.1	18.9	4.67
2024	22	-7.1	ARI	NL	Maj	ARI	5	6	.455	2.48	3.22	64	0	28	0	0	8	72.2	59	26	20	2	36	6	91	2	1	8	308	1.307	7.3	0.2	4.5	11.3	2.53
2025	23		2 Teams	2 Lgs	AAA-Rk	ARI	0	0		0.00	0.00	2	1	0	0	0	0	2.0	1	0	0	0	0	0	1	0	0	0	6	0.500	4.5	0.0	0.0	4.5
2025	23	-4.1	Reno	PCL	AAA	ARI	0	0		0.00	0.00	1	0	0	0	0	0	1.0	1	0	0	0	0	0	0	0	0	0	3	1.000	9.0	0.0	0.0	0.0
2025	23	1.9	Diamondbacks	ACL	Rk	ARI	0	0		0.00	0.00	1	1	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
2025	23	-6.1	ARI	NL	Maj	ARI	1	2	.333	4.11	4.70	17	0	9	0	0	5	15.1	7	8	7	1	12	1	22	3	0	2	67	1.239	4.1	0.6	7.0	12.9	1.83
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 (3 seasons)					Majors		6	8	.429	3.77	4.41	91	0	41	0	0	14	98.0	79	48	41	5	59	8	127	7	1	11	432	1.408	7.3	0.5	5.4	11.7	2.15
Minors (7 seasons)					Minors		7	15	.318	4.56	6.16	115	30	35	0	0	14	219.0	188	150	111	10	163	1	276	30	7	60	1024	1.603	7.7	0.4	6.7	11.3	1.69
Foreign (1 season)					Foreign		1	0	1.000	0.00	0.00	1	0	1	0	0	0	1.0	0	0	0	0	0	0	2	0	0	0	3	0.000	0.0	0.0	0.0	18.0
Other (1 season)					Other		0	0		2.35	2.35	7	0	3	0	0	3	7.2	3	2	2	1	5	0	13	1	1	0	33	1.043	3.5	1.2	5.9	15.3	2.60
All Levels (7 Seasons)							14	23	.378	4.26	5.53	214	30	80	0	0	31	325.2	270	200	154	16	227	9	418	38	9	71	1492	1.526	7.5	0.4	6.3	11.6	1.84

AAA (4 seasons)					Minors		3	1	.750	3.94	4.96	57	0	30	0	0	12	61.2	41	34	27	4	56	1	89	5	0	6	281	1.573	6.0	0.6	8.2	13.0	1.59
AA (1 season)					Minors		1	0	1.000	4.15	4.15	2	0	0	0	0	0	4.1	6	2	2	0	2	0	8	1	1	0	22	1.846	12.5	0.0	4.2	16.6	4.00
A+ (1 season)					Minors		1	2	.333	2.67	3.33	13	0	2	0	0	1	27.0	21	10	8	1	14	0	44	1	1	2	114	1.296	7.0	0.3	4.7	14.7	3.14
A (1 season)					Minors		1	3	.250	6.65	7.83	7	7	0	0	0	0	23.0	25	20	17	1	15	0	24	3	2	5	107	1.739	9.8	0.4	5.9	9.4	1.60
Rk (3 seasons)					Minors		0	2	.000	3.04	5.32	12	3	3	0	0	1	23.2	15	14	8	1	16	0	33	4	0	13	108	1.310	5.7	0.4	6.1	12.5	2.06
FRk (2 seasons)					Minors		1	7	.125	5.56	7.94	24	20	0	0	0	0	79.1	80	70	49	3	60	0	78	16	3	34	392	1.765	9.1	0.3	6.8	8.8	1.30