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Mason Barnett is a right-handed pitcher for the Athletics. In MLB, Mason Barnett has appeared in 16 games (41.2 IP) with a 5.40 ERA and 8.42 strikeouts per nine. In AAA, Mason Barnett has appeared in 34 games (161.2 IP) with a 5.73 ERA and 9.19 strikeouts per nine.
The table below lists the 50 most recent of Mason Barnett's 64 tracked appearances, newest first, with innings pitched, hits, earned runs, walks, and strikeouts. Each date links to the full game page.
| Date | Lvl | Opp | IP | H | ER | BB | K |
|---|---|---|---|---|---|---|---|
| Sep 24, 2026 | MLB | Houston Astros | 6.0 | 4 | 4 | 2 | 8 |
| Sep 18, 2026 | MLB | Cleveland Guardians | 3.1 | 7 | 3 | 4 | 4 |
| Sep 12, 2026 | AAA | Sacramento River Cats | 9.0 | 6 | 2 | 2 | 6 |
| Sep 5, 2026 | AAA | El Paso Chihuahuas | 3.0 | 8 | 6 | 2 | 1 |
| Aug 29, 2026 | AAA | Sugar Land Space Cowboys | 5.0 | 6 | 3 | 4 | 1 |
| Aug 23, 2026 | AAA | Albuquerque Isotopes | 3.2 | 8 | 5 | 2 | 0 |
| Aug 17, 2026 | MLB | Kansas City Royals | 2.2 | 7 | 6 | 4 | 2 |
| Aug 11, 2026 | MLB | Tampa Bay Rays | 4.0 | 5 | 5 | 3 | 0 |
| Aug 6, 2026 | MLB | Cincinnati Reds | 4.1 | 5 | 5 | 3 | 7 |
| Jul 30, 2026 | MLB | Boston Red Sox | 5.0 | 4 | 3 | 1 | 6 |
| Jul 25, 2026 | MLB | Minnesota Twins | 3.1 | 4 | 2 | 1 | 2 |
| Jul 18, 2026 | AAA | Round Rock Express | 3.0 | 1 | 0 | 0 | 1 |
| Jul 10, 2026 | MLB | Chicago White Sox | 1.0 | 3 | 3 | 1 | 0 |
| Jul 8, 2026 | MLB | Detroit Tigers | 1.0 | 0 | 0 | 2 | 0 |
| Jul 5, 2026 | MLB | Miami Marlins | 2.0 | 3 | 2 | 0 | 0 |
| Jul 3, 2026 | MLB | Miami Marlins | 2.0 | 3 | 4 | 2 | 2 |
| Jun 27, 2026 | MLB | Los Angeles Angels | 0.2 | 1 | 0 | 0 | 0 |
| Jun 25, 2026 | MLB | San Francisco Giants | 1.0 | 0 | 0 | 0 | 1 |
| Jun 23, 2026 | MLB | San Francisco Giants | 1.0 | 1 | 1 | 2 | 3 |
| Jun 18, 2026 | MLB | Los Angeles Angels | 1.0 | 1 | 0 | 1 | 1 |
| Jun 15, 2026 | MLB | Pittsburgh Pirates | 2.0 | 2 | 1 | 0 | 1 |
| Jun 12, 2026 | MLB | Colorado Rockies | 1.2 | 1 | 0 | 0 | 1 |
| Jun 9, 2026 | MLB | Milwaukee Brewers | 2.0 | 0 | 0 | 0 | 4 |
| Jun 5, 2026 | MLB | Houston Astros | 4.0 | 1 | 0 | 2 | 7 |
| May 28, 2026 | AAA | Tacoma Rainiers | 6.0 | 5 | 2 | 0 | 5 |
| May 22, 2026 | AAA | Albuquerque Isotopes | 2.1 | 6 | 7 | 6 | 1 |
| May 16, 2026 | AAA | Reno Aces | 5.0 | 5 | 3 | 6 | 3 |
| May 7, 2026 | AAA | St. Paul Saints | 6.0 | 3 | 0 | 1 | 6 |
| May 1, 2026 | AAA | Tacoma Rainiers | 3.2 | 6 | 5 | 1 | 5 |
| Apr 25, 2026 | AAA | Salt Lake Bees | 5.0 | 1 | 0 | 2 | 7 |
| Apr 19, 2026 | MLB | Chicago White Sox | 2.0 | 1 | 0 | 2 | 1 |
| Apr 14, 2026 | AAA | Reno Aces | 5.0 | 1 | 0 | 5 | 7 |
| Apr 4, 2026 | AAA | Oklahoma City Comets | 4.0 | 7 | 4 | 3 | 3 |
| Mar 29, 2026 | AAA | Salt Lake Bees | 5.2 | 5 | 1 | 2 | 4 |
| Sep 26, 2025 | MLB | Kansas City Royals | 5.2 | 3 | 3 | 2 | 3 |
| Sep 17, 2025 | MLB | Boston Red Sox | 4.0 | 5 | 2 | 3 | 2 |
| Sep 10, 2025 | MLB | Boston Red Sox | 3.2 | 7 | 3 | 1 | 4 |
| Sep 5, 2025 | MLB | Los Angeles Angels | 5.0 | 3 | 4 | 5 | 8 |
| Aug 30, 2025 | MLB | Texas Rangers | 4.0 | 8 | 5 | 0 | 1 |
| Aug 21, 2025 | AAA | Albuquerque Isotopes | 5.0 | 8 | 6 | 2 | 3 |
| Aug 15, 2025 | AAA | Tacoma Rainiers | 3.2 | 5 | 6 | 4 | 5 |
| Aug 9, 2025 | AAA | Salt Lake Bees | 6.0 | 3 | 1 | 2 | 9 |
| Aug 3, 2025 | AAA | Reno Aces | 4.1 | 7 | 5 | 3 | 8 |
| Jul 29, 2025 | AAA | Reno Aces | 4.0 | 6 | 6 | 2 | 8 |
| Jul 23, 2025 | AAA | Sacramento River Cats | 6.0 | 4 | 2 | 3 | 6 |
| Jul 13, 2025 | AAA | El Paso Chihuahuas | 5.0 | 5 | 2 | 2 | 7 |
| Jul 8, 2025 | AAA | El Paso Chihuahuas | 5.0 | 4 | 1 | 1 | 8 |
| Jul 2, 2025 | AAA | Oklahoma City Comets | 5.1 | 3 | 4 | 5 | 5 |
| Jun 26, 2025 | AAA | Albuquerque Isotopes | 4.1 | 8 | 5 | 1 | 7 |
| Jun 20, 2025 | AAA | Sugar Land Space Cowboys | 5.0 | 6 | 1 | 2 | 3 |