2025 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
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
Makes season debut
Martinez pitched a scoreless ninth inning in Saturday's 4-3 loss to the Cubs.
ANALYSIS
Martinez made his season debut, entering the top of the ninth inning with Arizona down 4-1. None of the four balls in play he allowed left the infield, and only a fielding error by Martinez extended what could have been a 1-2-3 frame. The right-hander inked a five-year extension late in spring training and is expected to pitch in high-leverage situations, potentially splitting closing duties with A.J. Puk.
Martinez made his season debut, entering the top of the ninth inning with Arizona down 4-1. None of the four balls in play he allowed left the infield, and only a fielding error by Martinez extended what could have been a 1-2-3 frame. The right-hander inked a five-year extension late in spring training and is expected to pitch in high-leverage situations, potentially splitting closing duties with A.J. Puk.
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
14
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
-10%
BAA vs RHP
2025
-100%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .248 | 46 | 29 | 31 | 2 | |||
| Since 2023vs Right | .222 | 61 | 18 | 43 | 2 | |||
| 2025vs Left | .000 | 2 | 0 | 0 | 0 | |||
| 2025vs Right | .400 | 0 | 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
-11%
ERA on Road
2025
No Stats
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 3.86 | 1.34 | 39.2 | 10.4 | 3.9 | ||||
| Since 2023Away | 3.43 | 1.52 | 44.2 | 12.3 | 6.0 | ||||
| 2025Home | 0.00 | 1.20 | 1.2 | 10.8 | 0.0 | ||||
| 2025Away | 0 | 0 | 0 | 0 | 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
0.00K/9
0.0BB/9
0.0HR/9
0.0Fastball
0.0 mphERA
0.00WHIP
0.00BABIP
.000GB/FB
0.00Left On Base
0.0%Exit Velocity
0.0 mphBarrels/BBE
0.0%Spin Rate
0 rpmBalls Hit 95+ MPH
0.0%Swinging Strike
22.2%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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Recent RotoWire Articles Featuring Justin Martinez See More
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Jan Levine has a slightly smaller rundown of NL options than last week to get you prepared for the North American start to the regular season.
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The latest update to the RotoWire Roundtable Rankings sees Jackson Chourio move into the back of the first round.
More Fantasy News
Inks five-year extension
Martinez signed a five-year, $18 million contract extension with the Diamondbacks on Friday, Alex D'Agostino of SI.com reports.
ANALYSIS
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Touched for two runs
Martinez allowed two runs on two hits and struck out one over one inning in Thursday's spring game against the Athletics.
ANALYSIS
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Manager doesn't plan to name closer
Diamondbacks manager Torey Lovullo said Wednesday that he probably won't name a closer at the start of the season and instead will play matchups with Martinez and others, Alex Weiner of ArizonaSports.com reports.
ANALYSIS
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Works clean inning
Martinez struck out two over one inning in Monday's Cactus League game against the Royals.
ANALYSIS
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Squelches fourth-inning jam
Martinez threw a scoreless two-thirds of an inning in Tuesday's spring game against Kansas City.
ANALYSIS
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