| 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 |
| 2026 | 1 | 0 | 10 | 0 | 15.3 | 6 | 3 | 29 | 2 | 1.17 | 0.587 | 114.9 |
| 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 |
| Date | News |
| 4/30/26 | [Fan Nation] - A's Bullpen Ranks Second in MLB Since Trading Mason Miller to Padres. The A's moved one of the game's top closers for one of its top prospects at last year's deadline. The numbers say it's paying off. Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 4/28/26 | Mason Miller snaps historic scoreless streak as Padres closer allows his first run since August 2025. Miller allowed two Cubs runners to score Monday night, his first in 34 ? innings Source: https://www.cbssports.com/mlb/news/mason-miller-sc... |
| 4/28/26 | Mason Miller snaps historic scoreless streak as Padres closer allows his first run since August 2025. Miller allowed two Cubs runners to score Monday night, his first in 34 ? innings Source: https://www.cbssports.com/mlb/news/mason-miller-sc... |
| 4/28/26 | Foul call? Streak ends for Pads' Miller amid drama. Mason Miller's streak of 34 2/3 scoreless innings -- a Padres record and the eighth-longest streak for a reliever since 1961 -- came to an end with some controversy. Source: https://www.espn.com/mlb/story/_/id/48616945/score... |
| 4/21/26 | Mason Miller has top-five Cy Young odds -- here's what it would take for MLB's best closer to make a real run. Mason Miller hasn't allowed a run all season, and he's struck out more than 70% of the batters he's faced Source: https://www.cbssports.com/mlb/news/mason-miller-cy... |
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