| Window | G | IP | ERA | WHIP | K | BB |
|---|---|---|---|---|---|---|
| Last 7 days | 2 | 2 | 0.00 | 2.50 | 6 | 2 |
| Last 30 days | 10 | 10 | 0.84 | 1.03 | 17 | 3 |
| 2026 season | 40 | 41 | 0.86 | 0.86 | 78 | 15 |
How Mason ranks vs qualified MLB pitchers in 2026. Higher percentile = better. The chip on each bar is the percentile (e.g. 11%ile means better than 11% of qualified players).
| Split | IP | ERA | WHIP | K | BB | HR |
|---|---|---|---|---|---|---|
| In relief | 41 | 0.86 | 0.86 | 78 | 15 | 0 |
| Home | 23 | 1.17 | 0.78 | 44 | 9 | 0 |
| Away | 18 | 0.48 | 0.96 | 34 | 6 | 0 |
Last appearance · Jul 21 · 21 pitches
| Pitch | Count | Usage | Avg Velo | Max |
|---|---|---|---|---|
Four-Seam FastballFF | 12 | 57% | 101.7 mph | 103.1 |
SliderSL | 8 | 38% | 88.2 mph | 89.2 |
ChangeupCH | 1 | 5% | 96.7 mph | 96.7 |
| Date | Opp | IP | H | R | ER | BB | K | HR | ERA |
|---|---|---|---|---|---|---|---|---|---|
| 2026-07-21 | @ Atlanta Braves | 1 | 1 | 0 | 0 | 1 | 3 | 0 | 0.86 |
| 2026-07-17 | @ Kansas City Royals | 1 | 2 |
| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | Oakland Athletics | 0 | 3 | 10 | 33.1 | 3.78 | 1.20 | 38 | 16 | 2 | 10.26 | 4.32 |
| 0 |
| 0 |
| 1 |
| 3 |
| 0 |
| 0.89 |
| 2026-07-12 | vs Toronto Blue Jays | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0.91 |
| 2026-07-11 | vs Toronto Blue Jays | 1 | 1 | 0 | 0 | 0 | 2 | 0 | 0.93 |
| 2026-07-07 | vs Arizona Diamondbacks | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0.96 |
| 2026-07-05 | @ Los Angeles Dodgers | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0.98 |
| 2026-07-04 | @ Los Angeles Dodgers | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1.01 |
| 2026-06-29 | @ Chicago Cubs | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0.78 |
| 2026-06-23 | vs Atlanta Braves | 2 | 0 | 0 | 0 | 0 | 3 | 0 | 0.79 |
| 2026-06-22 | vs Atlanta Braves | 1 | 1 | 0 | 0 | 1 | 2 | 0 | 0.84 |
| 2024 |
| Oakland Athletics |
| 2 |
| 2 |
| 55 |
| 65.0 |
| 2.49 |
| 0.88 |
| 104 |
| 21 |
| 6 |
| 14.40 |
| 2.91 |
| 2025 | Athletics | 1 | 2 | 38 | 38.1 | 3.76 | 1.02 | 59 | 18 | 4 | 13.85 | 4.23 |
| 2025 | San Diego Padres | 0 | 0 | 22 | 23.1 | 0.77 | 0.73 | 45 | 10 | 1 | 17.36 | 3.86 |
| 2025 | 1 | 2 | 60 | 61.2 | 2.63 | 0.91 | 104 | 28 | 5 | 15.18 | 4.09 |
| 2026 | San Diego Padres | 2 | 1 | 40 | 41.2 | 0.86 | 0.86 | 78 | 15 | 0 | 16.85 | 3.24 |
| Career | — | 5 | 8 | 165 | 201.2 | 2.41 | 0.94 | 324 | 80 | 13 | 14.46 | 3.57 |
