| Year | W | L | Sv | Hold | IP | H | BB | SO | ER | ERA | WHIP | Rate |
| 2025 proj | 1 | 1 | 0 | 0 | 15.0 | 13 | 10 | 14 | 10 | 5.84 | 1.530 | -1.6 |
| 2025 | 2 | 5 | 2 | 4 | 93.3 | 95 | 32 | 91 | 29 | 2.80 | 1.361 | 38.9 |
| 2024 | 1 | 0 | 0 | 0 | 10.0 | 9 | 8 | 7 | 7 | 6.30 | 1.700 | -2.2 |
| 2023 | 1 | 1 | 0 | 0 | 15.0 | 8 | 9 | 17 | 5 | 3.00 | 1.133 | 7.0 |
| Date | News |
| 12/17/25 | [Sports Illustrated] - With Bullpen Options Dwindling, the A's Need to Bring Back Sean Newcomb. The A's need to add pitching, and their options are dwindling. Adding Sean Newcomb could be the club's best bet Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 7/01/25 | Former Red Sox Pitcher Finding Success On West Coast. Former Boston Red Sox pitcher Sean Newcomb is finding a home on the West Coast with the Athletics. Newcomb was designated for assignment by the Red Sox on May 24. Newcomb served as a swing man for the Red Sox at the beginning of the season. Over 12 appearances, he pitched 41 innings and registered a 3.95 ERA. Source: https://nesn.com/2025/07/former-red-sox-pitcher-fi... |
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