Players · L · Pitcher · 2026
Mark Leiter Jr.
- Age
- 35
- B/T
- R/R
- Height
- 6' 0"
- Weight
- 210 lb
- Number
- #38
- Born
- March 13, 1991 in Fort Lauderdale, FL, United States
- MLB debut
- April 28, 2017
- Drafted
- 2013, round 22
- College
- New Jersey Institute of Technology
- High school
- Toms River North
- Salary, 2026
- $2.85M
- dbWAR
- 2.4 9 season(s)
- IP
- 33.2
- ERA
- 4.28
- FIP
- 2.95
- K/9
- 10.2
- FIP−
- 71 100 = avg
Mark Leiter Jr. is a relief pitcher for the Athletics. In 2026 he struck out 38 batters over 33.2 innings across 36 appearances, going 0-1. His ERA of 4.28 is 2.4% higher than the league average of 4.18 — 7th of 18 on his team, and 306th of 538 among MLB pitchers with 20+ innings. Stripping out defence, his 2.95 FIP suggests he pitched better than his ERA shows. He missed bats on 30.3% of swings (14.0% of every pitch he threw), walked 7.6% of the batters he faced and struck out 26.4%. His 0.8 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.
League context
Percentile among qualified pitchers, 2026.
WAR by season
Pitching
Standard and advanced, by season.
| Trend | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | ATH | 36 | 0 | 33.2 | 0 | 1 | 4 | 33 | 16 | 38 | 11 | 4.28 | 2.95 | 1.31 | 10.2 | 2.9 | 102 | 71 | 0.8 | |
| 2025 | NYY | 59 | 0 | 48.1 | 6 | 7 | 2 | 57 | 26 | 54 | 17 | 4.84 | 3.55 | 1.53 | 10.1 | 3.2 | 116 | 85 | 0.6 | |
| 2024 | CHC/NYY | 60 | 0 | 58.0 | 4 | 5 | 0 | 55 | 29 | 86 | 22 | 4.50 | 3.29 | 1.33 | 13.3 | 3.4 | 110 | 81 | 0.8 | |
| 2023 | CHC | 69 | 0 | 64.1 | 1 | 3 | 4 | 48 | 25 | 77 | 24 | 3.50 | 3.77 | 1.12 | 10.8 | 3.4 | 81 | 87 | 0.8 | |
| 2022 | CHC | 35 | 4 | 67.2 | 2 | 7 | 3 | 52 | 30 | 73 | 25 | 3.99 | 4.29 | 1.14 | 9.7 | 3.3 | 101 | 108 | 0.2 | |
| 2018 | PHI/TOR | 20 | 0 | 23.1 | 0 | 1 | 0 | 35 | 20 | 22 | 12 | 7.71 | 6.97 | 2.01 | 8.5 | 4.6 | 186 | 168 | -0.6 | |
| 2017 | PHI | 27 | 11 | 90.2 | 3 | 6 | 0 | 90 | 50 | 84 | 31 | 4.96 | 5.14 | 1.33 | 8.3 | 3.1 | 114 | 118 | 0.0 |
Batting
Standard and advanced, by season.
Platoon splits
How left- and right-handed hitters fare against him.
| Split | PA | AB | H | HR | BB | SO | AVG | OBP | SLG | wOBA | K% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| vs LHB | 87 | 76 | 18 | 0 | 9 | 28 | .237 | .333 | .276 | .284 | 32.2% |
| vs RHB | 57 | 52 | 15 | 2 | 2 | 10 | .288 | .333 | .442 | .339 | 17.5% |
Pitch sequencing
What Mark Leiter Jr. throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Mark Leiter Jr. throws in it.
Pitch arsenal
What he throws, how hard, how often it misses, and what hitters do with it.
| Splitter | 181 | 84.3 | 741 | 47.0% | 45.7% | 54 | .185 | .465 | |
| Sinker | 144 | 92.1 | 2,016 | 51.4% | 13.3% | 33 | .212 | .490 | |
| Curveball | 106 | 73.9 | 2,316 | 50.9% | 34.9% | 16 | .250 | .833 | |
| Four-Seam Fastball | 64 | 92.2 | 1,968 | 34.4% | 7.7% | 15 | .333 | .874 | |
| Cutter | 51 | 89.6 | 2,120 | 49.0% | 25.0% | 9 | — | — |
Head to head
Put Mark Leiter Jr. beside up to three others.
Or read one already written — Mark Leiter Jr. against:
Similar players
Nearest 2026 seasons by command, run prevention and role, on rate statistics rather than totals.
wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.