Justin Martinez
Pitcher · Career Stats, Bio & Records (2023-2026)
Justin Martinez is a pitcher who has played in Major League Baseball since 2023 for the Arizona Diamondbacks and the Arizona Diamondbacks, a span of 4 seasons. Across 106 career appearances, he has gone 9-9 with a 3.56 ERA and 145 strikeouts. His career Pitcher PIV — Baseball Data Hub's era-adjusted measure of pitching impact — is 2133.1.
- W (Wins):
- Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
- ERA (Earned Run Average):
- Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
- SO (Strikeouts):
- For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
- WHIP (Walks and Hits per Inning Pitched):
- Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.
Data updated
- Position
- Pitcher
- Bats / Throws
- R / R
- Height / Weight
- 6'3" / 180 lb
- MLB Debut
- 2023-07-07
- Jersey
- #63
Season-by-Season Pitching
Click a stat to plot it across every season.
| Year | Team | Lg | W | L | G | GS | CG | SHO | SV | IP | H | ER | BB | SO | ERA | Lg ERA | Pitcher PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | ARI | NL | 0 | 0 | 10 | 0 | 0 | 0 | 1 | 10.0 | 13 | 14 | 11 | 14 | 12.60 | 4.33 (-191%) | -655.8 |
| 2024 | ARI | NL | 5 | 6 | 64 | 0 | 0 | 0 | 8 | 72.2 | 59 | 20 | 36 | 91 | 2.48 | 4.08 (+39%) | 2746.5 |
| 2025 | ARI | NL | 1 | 2 | 17 | 0 | 0 | 0 | 5 | 15.1 | 7 | 7 | 12 | 22 | 4.11 | 4.16 (+1%) | 42.4 |
| 2026 | AZ | NL | 3 | 1 | 15 | 0 | 0 | 0 | 0 | 13.1 | 5 | 3 | 10 | 18 | 2.02 | 4.18 (+52%) | - |
| Career · 4 seasons | 9 | 9 | 106 | 0 | 0 | 0 | 14 | 111.1 | 84 | 44 | 69 | 145 | 3.56 | — | 2,133 | ||
Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.
Season-by-Season Batting
Click a stat to plot it across every season.
| Year | Team | Lg | G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG | Lg AVG | Lg OBP | Lg SLG | Lg OPS | PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | ARI | NL | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | — | — | — | — | 0.0 |
| 2024 | ARI | NL | 64 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | — | — | — | — | 0.0 |
| 2025 | ARI | NL | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | — | — | — | — | 0.0 |
| Career · 3 seasons | 91 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — | — | 0 | ||
Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.
Game Log & Splits
View full game log (182 games) →Per-game data from Retrosheet (regular season, through 2025).
Batting — Home / Away
| Split | G | AB | R | H | HR | RBI | AVG |
|---|---|---|---|---|---|---|---|
| Home | 46 | 0 | 0 | 0 | 0 | 0 | — |
| Away | 45 | 0 | 0 | 0 | 0 | 0 | — |
Pitching — Home / Away
| Split | G | IP | H | ER | BB | SO | ERA |
|---|---|---|---|---|---|---|---|
| Home | 46 | 47.1 | 37 | 19 | 21 | 55 | 3.61 |
| Away | 45 | 50.2 | 42 | 22 | 38 | 72 | 3.91 |
Last 10 Games — Pitching
| Date | Tm | Opp | Dec | IP | H | R | ER | BB | SO | HR |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-06-09 | AZ | SEA | — | 0.2 | 0 | 1 | 1 | 1 | 2 | 0 |
| 2025-06-04 | AZ | ATL | SV | 1.2 | 0 | 1 | 1 | 4 | 4 | 0 |
| 2025-06-01 | AZ | WAS | SV | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 |
| 2025-05-26 | AZ | PIT | — | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 2025-05-24 | AZ | STL | L | 1.0 | 2 | 2 | 2 | 1 | 2 | 0 |
| 2025-04-30 | AZ | NYN | — | 0.0 | 1 | 2 | 2 | 2 | 0 | 1 |
| 2025-04-27 | AZ | ATL | SV | 1.0 | 1 | 1 | 1 | 2 | 0 | 0 |
| 2025-04-26 | AZ | ATL | L | 1.0 | 0 | 1 | 0 | 1 | 0 | 0 |
| 2025-04-23 | AZ | TBR | — | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 2025-04-17 | AZ | MIA | — | 0.1 | 0 | 0 | 0 | 1 | 1 | 0 |
Fielding Statistics
Career Games by Position
Circle size = games played at each position.
| Position | Games |
|---|---|
| Pitcher | 91 |
Justin Martinez: the record in brief
Active since a debut on July 7, 2023, Justin Martinez has a record on this page that is still being added to. The team column never changes: it is the Arizona Diamondbacks from 2023 to 2025. Born on July 30, 2001, in Bonao, Monseñor Nouel, D.R., Martinez is listed as a pitcher and threw and hit right-handed. Martinez's listed size is 180 pounds on a 6-foot-3 frame.
The pitching table credits Martinez with a 9-9 record and a 3.56 ERA in 106 games. The same table counts 145 strikeouts and 14 saves. Against a 4.19 league ERA for the same years, Martinez was 15.0% better. The best win total was 5, in 2024. Among the heaviest workloads, the lowest ERA was 2.48 in 2024, when the league's was 4.08. Pitcher PIV, the site's era-adjusted run-prevention measure, totals 2,133.1 for Martinez's career.
Martinez appears at one position only: pitcher, in 91 games. Fielding on the mound produced 2 putouts and 9 assists against 3 errors.
Martinez's game-by-game log, linked below the splits, holds 182 games from Retrosheet.
Frequently Asked Questions about Justin Martinez
- What years did Justin Martinez play?
- Justin Martinez played in Major League Baseball from 2023 to 2026.
- Was Justin Martinez a pitcher?
- Yes. Justin Martinez pitched in the major leagues, recording 9 wins and 145 strikeouts.
- What teams has Justin Martinez played for?
- Justin Martinez has played for one team, the Arizona Diamondbacks (2023–2026).
- What are Justin Martinez's career stats?
- In 106 games, Justin Martinez has gone 9-9 with a 3.56 ERA, 145 strikeouts, 111.1 innings pitched, and 14 saves.
- What position does Justin Martinez play?
- Justin Martinez plays primarily as a pitcher, the position where he has appeared in the most games.
- How tall is Justin Martinez and how much does he weigh?
- Justin Martinez is listed at 6 feet 3 inches and 180 pounds.
- What number does Justin Martinez wear?
- Justin Martinez wears number 63, according to MLB's 2026 roster data.
- What was Justin Martinez's career ERA?
- Justin Martinez finished with a 3.56 career ERA, going 9-9 with 145 strikeouts.
- How many strikeouts did Justin Martinez have?
- Justin Martinez recorded 145 career strikeouts.