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, USA
- 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
- 2.0 3 season(s)
- IP
- 33.2
- ERA
- 4.28
- FIP
- 2.94
- K/9
- 10.2
- FIP−
- 70 100 = 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 was 2.4% higher than the league average of 4.18 — 5th of 16 on his team, and 280th of 467 among MLB pitchers with 20+ innings. Stripping out defence, his 2.94 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 0.6 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.
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 | .338 | 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, and how often it misses in 2026.
| Splitter | 181 | 84.3 | 741 | 47.0% | 45.7% | |
| Sinker | 144 | 92.1 | 2,016 | 51.4% | 13.3% | |
| Curveball | 106 | 73.9 | 2,316 | 50.9% | 34.9% | |
| Four-Seam Fastball | 64 | 92.2 | 1,968 | 34.4% | 7.7% | |
| Cutter | 51 | 89.6 | 2,120 | 49.0% | 25.0% |
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 36 | 0 | 33.2 | 0 | 1 | 4 | 33 | 16 | 38 | 11 | 4.28 | 2.94 | 1.31 | 10.2 | 2.9 | 102 | 70 | 0.6 | |
| 2025 | 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 | 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 |
Head to head
Put Mark Leiter Jr. beside up to three others.
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.