2025 Stats
W-L
1-0
ERA
0.00
WHIP
0.57
K
10
SV
2
Rest-of-Season Projections
2025 Fantasy Outlook
Martinez struggled in his first exposure to the big leagues in 2023 and failed to break camp with the Diamondbacks last spring. The 23-year-old missed plenty of bats in the minors, striking out 14 across 6.2 innings for Triple-A Reno last year before his recall in late-April. Martinez still had trouble throwing strikes in the majors, but worked around his 11.7 percent walk rate to produce a solid 2.48 ERA over 72.2 innings. The flamethrower walked 36 to inflate his WHIP (1.31), but his splitter was absolutely devastating (.098 BAA, .122 SLG), generating a 54 percent whiff rate that was 3rd-highest in the league for that pitch type. He also averaged 100.3 mph on his sinker while inducing ground balls at a 60 percent clip. Martinez's ascension to the back-end of Arizona's bullpen was no surprise and he racked up eight of the team's 13 saves after Aug 1. He enters 2025 as the presumed favorite for saves in Arizona, but closing is no guarantee due to the traffic he allows. Read Past Outlooks
Finishes off Miami
Martinez worked a scoreless inning, retiring all three batters he faced in Wednesday's 6-2 win over the Marlins.
ANALYSIS
With the Diamondbacks holding a 4-1 lead entering the eighth inning, manager Torey Lovullo had the late-game crew -- Martinez and A.J. Puk -- warming in the bullpen. Arizona then scored twice in the top half of the inning, increasing the lead to beyond what would qualify as a save. Lovullo stuck to the plan and had Puk work the bottom of the eighth with left-handers due up, then brought in Martinez to finish up. The latter needed just eight pitches to seal the win, making his seventh straight scoreless appearance to start the season.
With the Diamondbacks holding a 4-1 lead entering the eighth inning, manager Torey Lovullo had the late-game crew -- Martinez and A.J. Puk -- warming in the bullpen. Arizona then scored twice in the top half of the inning, increasing the lead to beyond what would qualify as a save. Lovullo stuck to the plan and had Puk work the bottom of the eighth with left-handers due up, then brought in Martinez to finish up. The latter needed just eight pitches to seal the win, making his seventh straight scoreless appearance to start the season.
Pitching Stats
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2025
2024
2023
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
13
Last 10 Games
13
Last 5 Games
12
How many pitches does Justin Martinez generally throw?
1-10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121+
What part of the game does Justin Martinez generally pitch?
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2023
-9%
BAA vs RHP
2025
-58%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .237 | 51 | 30 | 32 | 2 | |||
| Since 2023vs Right | .215 | 64 | 18 | 43 | 2 | |||
| 2025vs Left | .077 | 7 | 1 | 1 | 0 | |||
| 2025vs Right | .182 | 3 | 0 | 2 | 0 | |||
| 2024vs Left | .221 | 39 | 22 | 23 | 1 | |||
| 2024vs Right | .221 | 52 | 14 | 36 | 1 | |||
| 2023vs Left | .444 | 5 | 7 | 8 | 1 | |||
| 2023vs Right | .192 | 9 | 4 | 5 | 1 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2023
-13%
ERA on Road
2025
No Stats
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 3.67 | 1.27 | 41.2 | 10.6 | 3.7 | ||||
| Since 2023Away | 3.19 | 1.46 | 48.0 | 12.4 | 5.8 | ||||
| 2025Home | 0.00 | 0.55 | 3.2 | 12.3 | 0.0 | ||||
| 2025Away | 0.00 | 0.60 | 3.1 | 13.5 | 2.7 | ||||
| 2024Home | 2.16 | 1.20 | 33.1 | 10.0 | 3.0 | ||||
| 2024Away | 2.75 | 1.40 | 39.1 | 12.4 | 5.7 | ||||
| 2023Home | 17.36 | 2.36 | 4.2 | 13.5 | 11.6 | ||||
| 2023Away | 8.44 | 2.44 | 5.1 | 11.8 | 8.4 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does Justin Martinez compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
0.00K/9
12.2BB/9
0.0HR/9
0.0Fastball
100.7 mphERA
0.00WHIP
0.45BABIP
.234GB/FB
3.33Left On Base
100.0%Exit Velocity
71.1 mphBarrels/BBE
0.0%Spin Rate
1860 rpmBalls Hit 95+ MPH
4.5%Swinging Strike
15.2%Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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More Fantasy News
Works smooth eighth inning
Martinez struck out two over one inning to earn a hold in Sunday's 5-2 win over the Brewers.
ANALYSIS
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Notches second save
Martinez struck out one in a scoreless ninth inning Tuesday to record his second save of the season in a 4-3 win over the Orioles.
ANALYSIS
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Sharing ninth-inning work with Puk
Martinez earned the save after throwing a scoreless ninth inning on one hit Friday against the Nationals. He struck out one.
ANALYSIS
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Impressive hold in win
Martinez threw a scoreless and hitless eighth inning while striking out three to earn a hold in Tuesday's 7-5 win over the Yankees.
ANALYSIS
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Makes season debut
Martinez pitched a scoreless ninth inning in Saturday's 4-3 loss to the Cubs.
ANALYSIS
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