60-Day IL
Injury Elbow
Est. Return 8/21/2026
2025 Stats
W-L
1-2
ERA
4.11
WHIP
1.24
K
22
SV
5
2026 Projections
2026 Fantasy Outlook
After a breakout 2024 campaign, Martinez opened last season in a high-leverage role for the Diamondbacks, but spent the majority of 2025 on the injured list. The 24-year-old experienced diminished velocity early on thanks to right shoulder inflammation. After a few weeks on the IL, Martinez only made five more appearances for Arizona before spraining his UCL. The injury required Tommy John surgery; a procedure Martinez went through for the second time after originally going under the knife back in 2021. The young hurler will spend most, if not all, of the 2026 campaign recovering from the procedure. Read Past Outlooks
Back on 60-day IL
The Diamondbacks placed Martinez (elbow) on the 60-day injured list Saturday.
Analysis
The move will create space on Arizona's 40-man roster for Paul Sewald, who signed with the club on Thursday. Martinez underwent Tommy John surgery in June and is expected to return to the D-backs' bullpen near the end of August.
The move will create space on Arizona's 40-man roster for Paul Sewald, who signed with the club on Thursday. Martinez underwent Tommy John surgery in June and is expected to return to the D-backs' bullpen near the end of August.
Pitching Stats
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2025
2024
2023
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
16
Last 10 Games
18
Last 5 Games
21
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
-2%
BAA vs RHP
2025
-66%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .220 | 60 | 38 | 33 | 2 | |||
| Since 2023vs Right | .216 | 67 | 21 | 46 | 3 | |||
| 2025vs Left | .071 | 16 | 9 | 2 | 0 | |||
| 2025vs Right | .208 | 6 | 3 | 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
-74%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 3.61 | 1.23 | 47.1 | 10.5 | 4.0 | ||||
| Since 2023Away | 3.91 | 1.58 | 50.2 | 12.8 | 6.8 | ||||
| 2025Home | 1.93 | 0.75 | 9.1 | 10.6 | 3.9 | ||||
| 2025Away | 7.50 | 2.00 | 6.0 | 16.5 | 12.0 | ||||
| 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
1.83K/9
12.9BB/9
7.0HR/9
0.6Fastball
99.5 mphERA
4.11WHIP
1.24BABIP
.220GB/FB
2.00Left On Base
62.5%Exit Velocity
76.1 mphBarrels/BBE
1.7%Spin Rate
1922 rpmBalls Hit 95+ MPH
12.1%Swinging Strike
13.2%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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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.
More Fantasy News
Aiming for late-August return
Martinez (elbow) said Tuesday that he hopes to make his season debut by late August, Jack Sommers of SI.com reports.
Analysis
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Moves to 60-day IL
The Diamondbacks (elbow) transferred Martinez (elbow) from the 15-day injured list to the 60-day IL on Sunday.
Analysis
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Will undergo TJ surgery
Diamondbacks manager Torey Lovullo said Friday that Martinez (elbow) will undergo Tommy John surgery, Aaron Hughes of SI.com reports.
Analysis
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Out for season
Manager Torey Lovullo said Friday that Martinez (elbow) is expected to be sidelined for at least 12-to-13 months, Jack Sommers of SI.com reports.
Analysis
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Out with UCL sprain
The Diamondbacks placed Martinez on the 15-day injured list Tuesday due to a sprained UCL in his right elbow.
Analysis
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