| 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 |
| 2/22/26 | No surprise: Mason Miller already bringing heat as he readies for first season as Padres closer. Right-hander, who came out throwing 102 mph in first spring appearance, has thrown 28 of the 30 fastest recorded pitches in Padres history. Source: https://www.sandiegouniontribune.com/2026/02/22/no... |
| 2/18/26 | Olney ranks MLB's top 10 relievers -- and there's no doubt about who's No. 1. The dominance of San Diego's Mason Miller is undeniable, but who else makes the grade? Source: https://www.espn.com/mlb/story/_/id/47900466/mlb-2... |
| 2/18/26 | Buster Olney ranks MLB's top 10 relievers -- and there's no doubt about who's No. 1. The dominance of San Diego's Mason Miller is undeniable, but who else makes the grade? Source: https://www.espn.com/mlb/story/_/id/47900466/mlb-2... |
| 2/17/26 | Buster Olney ranks MLB's top 10 relievers -- and there's no doubt about who's No. 1. The dominance of San Diego's Mason Miller is undeniable, but who else makes the grade? Source: https://www.espn.com/mlb/story/_/id/47900466/mlb-2... |
| 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... |
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