Mason Barnett | Athletics
MLB Player
Mason Barnett
AthleticsHeight6' 0"Weight218 lbsAge25Experience2nd Season
2SVTied-100th
7.02ERA
50KTied-313th
1.66WHIP
Player Information
PositionRelief Pitcher
Jersey#63
Date of Birth7/11/2000
BirthplaceKennesaw, GA
Experience2nd Season
Bats / ThrowsRight/Right
MLB Debut2025
StatusActive
Next Game
More Athletics Players
Season, Postseason & Career
| Split | GP | GS | CG | SHO | IP | H | R | ER | HR | BB | K |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Regular Season | 20 | 6 | 0 | 0 | 50.0 | 53 | 40 | 39 | 14 | 30 | 50 |
| Career | 25 | 11 | 0 | 0 | 72.1 | 79 | 58 | 56 | 17 | 41 | 68 |
Pitching by Season
| Season | GP | GS | W | L | W% | WAR | ERA | WHIP | IP | K | BB | K/BB | H | R | ER | SV | HLD | BLSV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 5 | 5 | 1 | 1 | .500 | -0.3 | 6.85 | 1.66 | 22.1 | 18 | 11 | 1.6 | 26 | 18 | 17 | 0 | 0 | 0 |
| 2026 | 20 | 6 | 1 | 4 | .200 | 0.0 | 7.02 | 1.66 | 50.0 | 50 | 30 | 1.7 | 53 | 40 | 39 | 2 | 0 | 0 |
| Career | 25 | 11 | 2 | 5 | .286 | -- | 6.97 | 1.66 | 72.1 | 68 | 41 | 1.7 | 79 | 58 | 56 | 2 | 0 | 0 |
Opponent Batting by Season
| Season | P | TBF | P-TBF | OBA | OOBP | OSLUG | OOPS | 2B | 3B | HR | TB | RBI | BH | SH | SF | IBB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 431 | 104 | 4.144 | .286 | .365 | .451 | .816 | 6 | 0 | 3 | 41 | 17 | 1 | 0 | 1 | 0 |
| 2026 | 909 | 229 | 3.969 | .270 | .371 | .526 | .897 | 6 | 1 | 14 | 103 | 39 | 2 | 0 | 1 | 1 |
| Career | 1340 | 333 | 4.024 | .275 | .369 | .502 | .871 | 12 | 1 | 17 | 144 | 56 | 3 | 0 | 2 | 1 |
Expanded Pitching by Season
| Season | P/S | P/I | K/9 | QS | CG | SHO | GSC | GB | FB | G/F | IR | IRS | WP | BK | SB | CS | RSUP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 86.2 | 19.3 | 7.3 | 0 | 0 | 0 | 41.2 | 26 | 48 | 0.5 | 0 | 0 | 2 | 0 | 2 | 0 | 26.0 |
| 2026 | 78.5 | 18.2 | 9.0 | 0 | 0 | 0 | 37.0 | 50 | 97 | 0.5 | 6 | 2 | 3 | 0 | 5 | 3 | 26.0 |
| Career | 82.0 | 18.5 | 8.5 | 0 | 0 | 0 | 0.0 | 76 | 145 | 0.5 | 6 | 2 | 5 | 0 | 7 | 3 | 52.0 |
Game Log
| Game | Result | IP | H | R | ER | HR | BB | K | GB | FB | P | TBF | GSC | Dec | Rel | ERA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 vs HOU2026 Regular Season | L 7-5 | 6.0 | 4 | 4 | 4 | 2 | 2 | 8 | 2 | 12 | 87 | 24 | 54.0 | - | - | 7.02 |
 @ CLE2026 Regular Season | L 5-3 | 3.1 | 7 | 3 | 3 | 0 | 4 | 4 | 4 | 8 | 79 | 20 | 34.0 | - | - | 7.16 |
 @ KC2026 Regular Season | L 9-5 | 2.2 | 7 | 6 | 6 | 1 | 4 | 2 | 6 | 6 | 83 | 18 | 18.0 | L(1-4) | - | 7.08 |
 vs TB2026 Regular Season | L 12-4 | 4.0 | 5 | 6 | 5 | 3 | 3 | 0 | 5 | 12 | 67 | 20 | 27.0 | L(1-3) | - | 6.16 |
 @ CIN2026 Regular Season | L 6-5 | 4.1 | 5 | 5 | 5 | 3 | 3 | 7 | 3 | 7 | 82 | 21 | 37.0 | L(1-2) | - | 5.56 |
 vs BOS2026 Regular Season | L 5-4 | 5.0 | 4 | 3 | 3 | 0 | 1 | 6 | 7 | 6 | 73 | 21 | 52.0 | - | - | 4.85 |
 @ MIN2026 Regular Season | L 2-0 | 3.1 | 4 | 2 | 2 | 0 | 1 | 2 | 6 | 6 | 54 | 15 | 0.0 | L(1-1) | - | 4.74 |
 @ CHW2026 Regular Season | L 14-1 | 1.0 | 3 | 3 | 3 | 0 | 1 | 0 | 3 | 3 | 24 | 7 | 0.0 | - | - | 4.64 |
 @ DET2026 Regular SeasonWeek 27 | L 6-1 | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 1 | 26 | 5 | 0.0 | - | - | 3.54 |
 vs MIA2026 Regular SeasonWeek 27 | L 9-8 | 2.0 | 3 | 2 | 2 | 2 | 0 | 0 | 2 | 6 | 32 | 8 | 0.0 | - | - | 3.72 |
| vs MIA2026 Regular SeasonWeek 27 | L 12-5 | 2.0 | 3 | 4 | 4 | 2 | 2 | 2 | 2 | 5 | 45 | 11 | 0.0 | - | - | 3.12 |
 @ LAA2026 Regular SeasonWeek 26 | L 5-2 | 0.2 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 7 | 2 | 0.0 | - | - | 1.17 |
 @ SF2026 Regular SeasonWeek 26 | W 9-6 | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 13 | 3 | 0.0 | - | SV(2) | 1.23 |
| @ SF2026 Regular SeasonWeek 25 | L 3-1 | 1.0 | 1 | 1 | 1 | 0 | 2 | 3 | 0 | 1 | 25 | 6 | 0.0 | - | - | 1.32 |
| vs LAA2026 Regular SeasonWeek 25 | W 5-0 | 1.0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 3 | 30 | 5 | 0.0 | - | - | 0.71 |
 vs PIT2026 Regular SeasonWeek 24 | W 11-2 | 2.0 | 2 | 1 | 1 | 1 | 0 | 1 | 0 | 7 | 32 | 8 | 0.0 | - | - | 0.77 |
 vs COL2026 Regular SeasonWeek 24 | W 6-4 | 1.2 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 5 | 12 | 6 | 0.0 | W(1-0) | - | 0.00 |
 vs MIL2026 Regular SeasonWeek 23 | W 7-5 | 2.0 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 1 | 31 | 6 | 0.0 | - | SV(1) | 0.00 |
| @ HOU2026 Regular SeasonWeek 23 | L 5-1 | 4.0 | 1 | 0 | 0 | 0 | 2 | 7 | 1 | 4 | 64 | 14 | 0.0 | - | - | 0.00 |
| vs CHW2026 Regular SeasonWeek 16 | L 7-4 | 2.0 | 1 | 0 | 0 | 0 | 2 | 1 | 4 | 2 | 43 | 9 | 0.0 | - | - | 0.00 |