| Year | W | L | Sv | Hold | IP | H | BB | SO | ER | ERA | WHIP | Rate |
| 2025 proj | 2 | 2 | 28 | 0 | 65.0 | 35 | 21 | 104 | 18 | 2.49 | 0.862 | 59.0 |
| 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 |
| 11/16/25 | [SB Nation: Athletics Nation] - 2025 Athletics Season In Review: Mason Miller. Next up in our look back at the A’s players in 2025, we turn back to the reliever role and remember our shortened time with Mason Miller. He was one of the most electric arms in A’s recent history and we clearly miss him, but did his departure help improve the team long-term? How was […] Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 11/10/25 | Miller among 34 Super 2s eligible for arbitration. San Diego reliever Mason Miller, Los Angeles Angels shortstop Zach Neto and Kansas City third baseman Maikel Garcia are among 34 players with two to three years of service time who are eligible for salary arbitration. Source: https://www.espn.com/mlb/story/_/id/46883728/mason... |
| 11/09/25 | Miller among 34 Super 2s eligible for arbitration. San Diego reliever Mason Miller, Los Angeles Angels shortstop Zach Neto and Kansas City third baseman Maikel Garcia are among 34 players with two to three years of service time who are eligible for salary arbitration. Source: https://www.espn.com/mlb/story/_/id/46883728/mason... |
| 11/09/25 | Miller among 34 Super 2s eligible for arbitration. San Diego reliever Mason Miller, Los Angeles Angels shortstop Zach Neto and Kansas City third baseman Maikel Garcia are among 34 players with two to three years of service time who are eligible for salary arbitration. Source: https://www.espn.com/mlb/story/_/id/46883728/mason... |
| 11/08/25 | [MLB: Athletics] - Who could A's target to bolster bullpen this offseason?. Following their blockbuster deal with the Padres at the 2025 Trade Deadline that sent Mason Miller and JP Sears to San Diego for a package headlined by super prospect Leo De Vries, the Athletics took a “strength in numbers” approach to their closer role. There was no replacing Miller, an Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
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