| Year | W | L | Sv | Hold | IP | H | BB | SO | ER | ERA | WHIP | Rate |
| 2026 proj | 1 | 2 | 20 | 5 | 58.0 | 30 | 24 | 93 | 17 | 2.69 | 0.919 | 45.0 |
| 2025 | 1 | 2 | 22 | 10 | 61.7 | 28 | 28 | 104 | 18 | 2.63 | 0.908 | 59.9 |
| 2024 | 2 | 2 | 28 | 0 | 65.0 | 35 | 21 | 104 | 18 | 2.49 | 0.862 | 70.7 |
| 2023 | 0 | 3 | 0 | 1 | 33.3 | 24 | 16 | 38 | 14 | 3.78 | 1.200 | 7.4 |
| Date | News |
| 2/16/26 | [Sporting News] - A's still looking for their closer following the Mason Miller trade. Mason Miller left a big void in the A's bullpen. Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 2/13/26 | [SB Nation: Athletics Nation] - Who Will be the A’s Closer This Season?. Last July, the A’s made one of the biggest trades of the trade deadline, sending flamethrowing closer Mason Miller to the San Diego Padres in exchange for elite shortstop prospect Leo De Vries and three minor-league pitchers. After trading Miller, one of the best closers in the league, many people expected the A’s bullpen to […] Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 2/11/26 | It's official: Mason Miller named Padres closer. No content provided Source: https://www.mlb.com/news/mason-miller-padres-close... |
| 2/06/26 | Three more Padres relievers named to World Baseball Classic rosters. Including Mason Miller, the Padres' bullpen is sending four relievers to World Baseball Classic Source: https://www.sandiegouniontribune.com/2026/02/05/th... |
| 2/06/26 | Three more Padres relievers named to World Baseball Classic rosters. Including Mason Miller, the Padres' bullpen is sending four relievers to World Baseball Classic Source: https://www.sandiegouniontribune.com/2026/02/05/th... |
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