Mark Leiter Jr. played in Major League Baseball from 2017 to 2024, appearing in 211 games over 5 seasons. He recorded a total of 10 W and 22 L, an ERA of 4.56, 342 SO, a WHIP of 1.296, and a WAR of 0.1.
Mark Leiter Jr. Yearly Pitching Stats
This chart shows the season-by-season changes in ERA, SO, and IP for Mark Leiter Jr..
🧾 Basic Profile
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| Name | Mark Leiter Jr. |
| Date of Birth | March 13, 1991 |
| Nationality |  United States |
| MLB Debut | 2017 |
📊 Career Summary
Mark Leiter Jr. appeared in 211 games over 5 MLB seasons from 2017 to 2024. Below are his cumulative stats and MLB all-time rankings:
| GS | 15 (MLB Rank: 3,900) |
| GF | 39 (MLB Rank: 2,077) |
| W | 10 (MLB Rank: 3,988) |
| L | 22 (MLB Rank: 3,026) |
| SV | 7 (MLB Rank: 1,575) |
| ERA | 4.56 (MLB Rank: 6,237) |
| IP | 304 (MLB Rank: 3,465) |
| SO | 342 (MLB Rank: 2,223) |
| BB | 114 (MLB Rank: 3,509) |
| H | 280 (MLB Rank: 3,634) |
| HR | 50 (MLB Rank: 2,003) |
| SO9 | 10.12 (MLB Rank: 479) |
| BB9 | 3.38 (MLB Rank: 7,094) |
| H9 | 8.29 (MLB Rank: 9,277) |
| HR9 | 1.48 (MLB Rank: 1,717) |
| WHIP | 1.296 (MLB Rank: 9,391) |
| WAR | 0.1 (MLB Rank: 5,465) |
📊 Last Season Summary (2024)
In his final season (2024), Mark Leiter Jr. recorded the following stats:
| GS | 0 |
| GF | 7 |
| W | 4 |
| L | 5 |
| ERA | 4.5 |
| IP | 58 |
| SO | 86 |
| BB | 22 |
| H | 55 |
| HR | 8 |
| SO9 | 13.34 |
| BB9 | 3.41 |
| H9 | 8.53 |
| HR9 | 1.24 |
| WHIP | 1.328 |
| WAR | −0.4 |
📈 Seasonal Highlights
- Most Wins: 2024, 4 W
- Most SO: 2024, 86 SO
- Most IP: 2017, 90.2 IP
- Best WAR: 2022, 0.9 WAR
- Best ERA: 2023, 3.51 ERA
🎯 Postseason Performance
Mark Leiter Jr. has no postseason appearances.
Mark Leiter Jr. Career Pitching Stats Overview
| season | W | L | ERA | W-L% | SV | SO | IP | WAR | WHIP | HR | H | BB | R | ER | ERA+ | FIP | SO9 | SO/BB | GS | G | GF | CG | SHO | HR9 | H9 | BB9 | BK | HBP | IBB | WP | BF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2017 | 3 | 6 | 4.96 | 0.333 | 0 | 84 | 90.2 | -0.1 | 1.335 | 18 | 90 | 31 | 59 | 50 | 87 | 5.14 | 8.3 | 2.71 | 11 | 27 | 5 | 0 | 0 | 1.8 | 8.9 | 3.1 | 0 | 7 | 2 | 3 | 395 |
2018 | 0 | 1 | 7.71 | 0 | 0 | 22 | 23.1 | -1.1 | 2.014 | 7 | 35 | 12 | 28 | 20 | 55 | 6.97 | 8.5 | 1.83 | 0 | 20 | 4 | 0 | 0 | 2.7 | 13.5 | 4.6 | 0 | 2 | 3 | 2 | 123 |
2022 | 2 | 7 | 3.99 | 0.222 | 3 | 73 | 67.2 | 0.9 | 1.138 | 10 | 52 | 25 | 32 | 30 | 105 | 4.29 | 9.7 | 2.92 | 4 | 35 | 11 | 0 | 0 | 1.3 | 6.9 | 3.3 | 0 | 7 | 2 | 5 | 282 |
2023 | 1 | 3 | 3.5 | 0.25 | 4 | 77 | 64.1 | 0.8 | 1.119 | 7 | 48 | 24 | 27 | 25 | 122 | 3.77 | 10.8 | 3.21 | 0 | 69 | 12 | 0 | 0 | 1 | 6.7 | 3.4 | 1 | 8 | 0 | 2 | 269 |
2024 | 4 | 5 | 4.5 | 0.444 | 0 | 86 | 58 | -0.4 | 1.328 | 8 | 55 | 22 | 34 | 29 | 91 | 3.29 | 13.3 | 3.91 | 0 | 60 | 7 | 0 | 0 | 1.2 | 8.5 | 3.4 | 0 | 3 | 1 | 5 | 256 |