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Justin Martinez

Arizona Diamondbacks · RP Throws: R Bats: R Height: 6'4 Weight: 180 Born: )

Percentile Ranks
vs LHH
vs RHH K%
100.0
44.8 xWOBA
0.230 · 100%
0.357 · 15%
xSLG
100.0
74.5

Year	Team	G	GS	W-L	IP	ERA	WHIP	K%	CSW%	BB%	xAVG	xSLG	xwOBA	xISO	BAR%	SS%	HH%	GB%	LD%	FB%	Z%	Z Sw%	OZ%	OZ Sw%	Apr	May	Jun	Jul	Aug	Sep
2025		17	0	1-2	15.1	4.11	1.26	32.8%	0.0%	17.9%	.172	.234	.286	.062	3.3%	30.0%	23%	57%	17%	17%	46%	31%	54%	50%	2.5	2.4	5.5	0.0	0.0	0.0
2024		64	0	5-6	72.2	2.48	1.32	29.5%	0.0%	11.7%	.216	.284	.272	.068	2.8%	27.9%	32%	60%	24%	13%	48%	23%	52%	57%	0.0	0.0	0.0	0.0	0.0	0.0
2023		10	0	0-0	10.0	12.60	2.40	24.6%	0.0%	19.3%	.240	.385	.359	.145	3.3%	36.7%	33%	47%	17%	33%	42%	27%	58%	42%	0.0	0.0	0.0	0.0	0.0	0.0

2025

Box Score														Pitch Usage/Velo								DFS
#	Date		Opp	IP	BF	PC	H	HR	ER	BB	SO	SwStr	CSW%	SL		FF		FS		SI		Rating	DK $	DK	FD $	FD
1	2025	Jun, 09	SEA	0.2	3	17	0	0	1	1	2	6	41.2	17.6%	91.3	58.8%	99.5	17.6%	88.2	17.6%	98.1		n/a	2.90	n/a	5
2	2025	Jun, 04	@ATL	1.2	10	37	0	0	1	4	4	5	32.4	13.5%	91.2	8.1%	98.7	35.1%	87.7	43.2%	99.1		n/a	7.35	n/a	14
3	2025	Jun, 01	WSH	1.0	3	13	0	0	0	0	2	1	46.2			23.1%	101.4	46.2%	88.6	23.1%	101.2		n/a	6.25	n/a	9
4	2025	May, 26	PIT	1.0	3	13	0	0	0	0	1	1	30.8			30.8%	100.3	53.8%	88.4	15.4%	100.5		n/a	4.25	n/a	6
5	2025	May, 24	@STL	1.0	6	23	2	0	2	1	2	3	30.4	13.0%	91.8	21.7%	99.2	26.1%	88.9	39.1%	100.0		n/a	0.45	n/a	3
6	2025	Apr, 30	@NYM	0.0	3	14	1	1	2	2	0	0	21.4	14.3%	87.3			35.7%	84.6	50.0%	94.5		n/a	-5.80	n/a	-6
7	2025	Apr, 27	ATL	1.0	6	26	1	0	1	2	0	1	19.2	3.8%	89.8	23.1%	96.8	34.6%	85.6	38.5%	96.7		n/a	-1.55	n/a	0
8	2025	Apr, 26	ATL	1.0	4	10	0	0	0	1	0	0	10.0					10.0%	86.9	90.0%	97.5		n/a	1.65	n/a	3
9	2025	Apr, 23	TB	1.0	3	12	0	0	0	0	1	2	16.7	8.3%	91.2	16.7%	100.3	25.0%	88.7	50.0%	99.2		n/a	4.25	n/a	6
10	2025	Apr, 17	@MIA	0.1	2	10	0	0	0	1	1	2	50.0	10.0%	91.2			30.0%	87.1	60.0%	99.6		n/a	2.15	n/a	4
11	2025	Apr, 16	@MIA	1.0	3	8	0	0	0	0	0	0	25.0					25.0%	89.0	75.0%	100.5		n/a	2.25	n/a	3
12	2025	Apr, 13	MIL	1.0	3	18	0	0	0	0	2	1	38.9	5.6%	92.5	11.1%	100.6	44.4%	88.3	38.9%	99.6		n/a	6.25	n/a	9
13	2025	Apr, 08	BAL	1.0	3	9	0	0	0	0	1	1	55.6			22.2%	99.4	33.3%	88.0	44.4%	99.7		n/a	4.25	n/a	6
14	2025	Apr, 04	@WSH	1.0	4	15	1	0	0	0	1	1	33.3			40.0%	100.2	33.3%	88.8	26.7%	100.7		n/a	3.65	n/a	6
15	2025	Apr, 01	@NYY	1.0	3	14	0	0	0	0	3	4	35.7	14.3%	91.1	28.6%	100.1	28.6%	88.9	28.6%	99.3		n/a	8.25	n/a	12
16	2025	Mar, 30	CHC	0.2	4	19	2	0	0	0	2	3	31.6										n/a	8.30	n/a	14
17	2025	Mar, 29	CHC	1.0	4	9	0	0	0	0	0	2	22.2										n/a	2.25	n/a	3

2024

Box Score														Pitch Usage/Velo								DFS
#	Date		Opp	IP	BF	PC	H	HR	ER	BB	SO	SwStr	CSW%	SL		FF		FS		SI		Rating	DK $	DK	FD $	FD

2023

Box Score														Pitch Usage/Velo								DFS
#	Date		Opp	IP	BF	PC	H	HR	ER	BB	SO	SwStr	CSW%	SL		FF		FS		SI		Rating	DK $	DK	FD $	FD

2025 Splits				vs LHB									vs RHB
Pitch	Type	MPH	SPIN	Whiff%	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR
4-Seamer	Fastball	MPH		0%	32%	.030	.029	62.5	0.0	.043	.000	0	30%	.069	.384	33.3	33.3	.081	.000	0
Slider	Breaking	91.2 MPH	2355	50%	7%	.000	.000	0.0	0.0	.000	.000	0	42%	.504	.453	0.0	0.0	.524	.000	0
Split-finger	Offspeed	87.9 MPH	661	59%	61%	.040	.200	55.0	25.0	.043	.000	0	28%	.000	.181	75.0	0.0	.000	.000	0

2024 Splits				vs LHB									vs RHB
Pitch	Type	MPH	SPIN	Whiff%	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR
4-Seamer	Fastball	MPH		0%	26%	.297	.333	21.4	7.1	.415	.000	0	17%	.140	.261	43.8	18.8	.222	.250	1
Slider	Breaking	89.8 MPH	2361	45%	21%	.238	.386	25.0	16.7	.547	.300	1	57%	.282	.286	16.7	2.8	.343	.057	0
Split-finger	Offspeed	89.8 MPH	845	54%	52%	.119	.176	56.3	10.4	.147	.047	0	27%	.069	.081	77.5	2.5	.077	.000	0

2023 Splits				vs LHB									vs RHB
Pitch	Type	MPH	SPIN	Whiff%	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR
4-Seamer	Fastball	100.6 MPH	2240	18%	35%	.465	.605	11.8	35.3	.846	.455	1	55%	.262	.373	15.0	15.0	.346	.200	1
Slider	Breaking	89.6 MPH	2267	47%	6%	.000	.595	0.0	0.0	.234	.323	0	25%	.061	.151	28.6	14.3	.076	.000	0
Splitter	Offspeed	MPH		0%	21%	.000	.000	100.0	0.0	.000	.000	0	17%	.000	.000	83.3	0.0	.000	.000	0

Splits	vs LHB								vs RHB
Year	PA	xBAVG	xWOBA	xSLG	ISO	K%	BB%	HR	PA	xBAVG	xWOBA	xSLG	ISO	K%	BB%	HR
2025	37	.086	.230	.103	.036	43.2%	24.3%	0	29	.272	.357	.387	.167	20.7%	6.9%	1
2024	121	.239	.316	.353	.077	32.2%	13.2%	1	181	.201	.243	.240	.061	28.7%	7.7%	1
2023	24	.320	.462	.593	.389	20.8%	25.0%	1	32	.186	.283	.242	.115	28.1%	12.5%	1

	Home								Road
Season	PA	xAVG	xWOBA	K%	BB%	xSLG	ISO	HR	PA	xAVG	xWOBA	K%	BB%	xSLG	ISO	HR
2025	36	.161	.241	30.6%	11.1%	.178	.033	0	30	.186	.341	36.7%	23.3%	.310	.182	1
2024	135	.225	.267	27.4%	6.7%	.286	.041	0	167	.208	.277	32.3%	12.6%	.282	.090	2
2023	27	.250	.427	25.9%	22.2%	.489	.316	1	29	.234	.298	24.1%	13.8%	.308	.160	1

Split	Games	Wind 0-9 mph+	Wind 10+ mph	Humid 0-25	Humid 25-50	Humid 50-75	Humid 75-100	Temp 0-40	Temp 40-60	Temp 61-79	Temp 80+
Road	3.77	4.73	2.42	1.65	3.58	4.72	3.74	0.00	4.55	3.04	5.03
Home	3.98	4.25	2.70	4.24	0.00	0.70	0.00	0.00	0.00	3.38	3.89