2025 Stats
W-L
1-2
ERA
3.75
WHIP
1.17
K
14
SV
3
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
Strands three inherited runners
Martinez struck out one over a scoreless inning to earn a hold in Monday's 5-0 win over Pittsburgh.
ANALYSIS
Martinez's hold felt like a save. He entered the eighth inning with none out and the bases loaded and got a strikeout, popout and groundout. At the time when Martinez was activated off the injured list, Arizona manager Torey Lovullo indicated he'd prefer to ease him back before returning Martinez to a ninth-inning role, but Monday's outing may have jump-started the move back to closer.
Martinez's hold felt like a save. He entered the eighth inning with none out and the bases loaded and got a strikeout, popout and groundout. At the time when Martinez was activated off the injured list, Arizona manager Torey Lovullo indicated he'd prefer to ease him back before returning Martinez to a ninth-inning role, but Monday's outing may have jump-started the move back to closer.
Pitching Stats
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2025
2024
2023
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
14
Last 10 Games
14
Last 5 Games
17
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
-4%
BAA vs RHP
2025
-64%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .229 | 55 | 35 | 33 | 2 | |||
| Since 2023vs Right | .220 | 64 | 19 | 46 | 3 | |||
| 2025vs Left | .091 | 11 | 6 | 2 | 0 | |||
| 2025vs Right | .250 | 3 | 1 | 5 | 1 | |||
| 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
-8%
ERA at Home
2025
-86%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 3.55 | 1.25 | 45.2 | 10.1 | 3.9 | ||||
| Since 2023Away | 3.86 | 1.55 | 49.0 | 12.5 | 6.2 | ||||
| 2025Home | 1.17 | 0.78 | 7.2 | 8.2 | 3.5 | ||||
| 2025Away | 8.31 | 1.85 | 4.1 | 14.5 | 8.3 | ||||
| 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
2.00K/9
10.5BB/9
5.3HR/9
0.8Fastball
99.4 mphERA
3.75WHIP
1.17BABIP
.232GB/FB
2.14Left On Base
63.5%Exit Velocity
76.6 mphBarrels/BBE
2.0%Spin Rate
1942 rpmBalls Hit 95+ MPH
14.0%Swinging Strike
11.5%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
Tagged with first blown save
Martinez (1-2) was charged with his first blown save of the season and took the loss Saturday against the Cardinals, coughing up two runs on two hits and a walk in one inning. He struck out two.
ANALYSIS
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Returns from 15-day IL
The Diamondbacks activated Martinez (shoulder) from the 15-day injured list Friday.
ANALYSIS
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Could return for weekend series
Diamondbacks manager Torey Lovullo said after Wednesday's 3-1 loss to the Dodgers that Martinez (shoulder) has a good chance to return from the 15-day injured list for this weekend's series in St. Louis, Jody Jackson of Bally Sports Arizona reports.
ANALYSIS
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Throws scoreless inning at Triple-A
Martinez (shoulder) allowed one hit over a scoreless inning during a rehab appearance for Triple-A Reno on Tuesday.
ANALYSIS
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Continuing rehab at Triple-A
Martinez (shoulder) is scheduled to throw an inning for Triple-A Reno on Tuesday as part of his rehab assignment, Jody Jackson of Bally Sports Arizona reports.
ANALYSIS
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