| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2018 | Cincinnati Reds | 0 | 0 | 8 | 7.0 | 24.43 | 3.57 | 7 | 12 | 4 | 9.00 | 15.43 |
| 2019 | Washington Nationals |
| 2 |
| 3 |
| 52 |
| 48.1 |
| 3.91 |
| 1.45 |
| 74 |
| 38 |
| 6 |
| 13.78 |
| 7.08 |
| 2020 | Washington Nationals | 1 | 1 | 20 | 20.1 | 2.66 | 0.74 | 32 | 7 | 4 | 14.16 | 3.10 |
| 2021 | Washington Nationals | 1 | 3 | 38 | 31.2 | 7.39 | 1.71 | 42 | 25 | 6 | 11.94 | 7.11 |
| 2022 | Washington Nationals | 1 | 3 | 29 | 30.0 | 3.30 | 1.30 | 36 | 13 | 5 | 10.80 | 3.90 |
| 2023 | Washington Nationals | 0 | 0 | 1 | 1.0 | 0.00 | 2.00 | 1 | 1 | 0 | 9.00 | 9.00 |
| 2024 | Washington Nationals | 0 | 0 | 50 | 51.0 | 4.76 | 1.49 | 44 | 29 | 8 | 7.76 | 5.12 |
| 2025 | Pittsburgh Pirates | 0 | 1 | 11 | 7.2 | 10.57 | 1.70 | 9 | 6 | 0 | 10.57 | 7.04 |
| 2025 | Detroit Tigers | 0 | 0 | 2 | 2.0 | 13.50 | 2.00 | 2 | 3 | 0 | 9.00 | 13.50 |
| 2025 | 2 teams | 0 | 1 | 13 | 9.2 | 11.17 | 1.76 | 11 | 9 | 0 | 10.24 | 8.38 |
| Career | — | 5 | 11 | 211 | 199.0 | 5.52 | 1.50 | 247 | 134 | 33 | 11.17 | 6.06 |
