| Year | W | L | Sv | Hold | IP | H | BB | SO | ER | ERA | WHIP | Rate |
| 2026 proj | 8 | 5 | 0 | 0 | 143.0 | 140 | 56 | 130 | 63 | 3.96 | 1.375 | 26.6 |
| 2026 | 0 | 2 | 0 | 0 | 14.7 | 21 | 6 | 14 | 10 | 6.14 | 1.841 | -41.6 |
| 2025 | 9 | 6 | 0 | 0 | 168.7 | 166 | 65 | 150 | 79 | 4.22 | 1.370 | 29.1 |
| 2024 | 10 | 3 | 0 | 0 | 121.0 | 110 | 46 | 101 | 39 | 2.90 | 1.289 | 55.6 |
| Date | News |
| 4/08/26 | Mets not ready for rotation shakeup despite inconsistent David Peterson. Two or three starts do not make a season. The question Mets' David Peterson will now answer is whether they will become a problem. Source: https://sny.tv/articles/mets-not-ready-rotation-sh... |
| 4/02/26 | David Peterson roughed up, Mets bats remain quiet in 7-2 loss to Giants. The Mets offense continued to struggle, recording just five hits in a 7-2 loss to the San Francisco Giants on Thursday night. Source: https://sny.tv/articles/mets-giants-takeaways-4-2-... |
| 3/28/26 | Mets Notes: David Peterson's strong first start of season; Jorge Polanco, Bo Bichette needing more reps at new positions. After the Mets came from behind twice to beat the Pittsburgh Pirates on Saturday night, manager Carlos Mendoza and starter David Peterson discussed the win. Source: https://sny.tv/articles/mets-notes-david-peterson-... |
| 1/08/26 | Mets avoid arbitration with David Peterson and Tylor Megill for 2026 MLB season. The Mets have avoided arbitration by agreeing to new contracts with a handful of players, including David Peterson. Source: https://sny.tv/articles/mets-avoid-arbitration-202... |
| 12/09/25 | Mets' David Peterson 'generating interest' as potential trade candidate: report. Mets left-hander David Peterson, a 2025 All-Star, is reportedly generating trade interest. Source: https://sny.tv/articles/mets-david-peterson-genera... |
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