| Year | W | L | Sv | Hold | IP | H | BB | SO | ER | ERA | WHIP | Rate |
| 2026 proj | 1 | 1 | 0 | 0 | 22.0 | 26 | 11 | 18 | 17 | 6.95 | 1.682 | -7.3 |
| 2025 | 1 | 1 | 0 | 0 | 22.3 | 26 | 11 | 18 | 17 | 6.85 | 1.657 | -8.5 |
| Date | News |
| 3/29/26 | [A's Farm] - Sunday, March 29th: Mason Barnett Pitches Vegas to Victory while Serven Keeps Serving Hits. PACIFIC COAST LEAGUE (TRIPLE-A) Salt Lake Bees 1 Las Vegas Aviators 6 WP: Barnett 1-0 / 1.59 RHP Mason Barnett turned in a solid start and catcher Brian Serven continued his hit streak to help Las Vegas win its third straight over Salt… The post first appeared on . Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 3/02/26 | [SB Nation: Athletics Nation] - Athletics defeat Padres 7-2 for their 3rd victory of the Spring. Spring Training entered week two as the Athletics took on the San Diego Padres at Peoria Stadium in Arizona today, the Padres Spring Training Facility. Right-hander Mason Barnett got the start for the A’s today. He made five starts for the Athletics in 2025. logging 22+ innings. Righty Michael King got the nod for the […] Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 2/24/26 | [SB Nation: Athletics Nation] - Spring Training Game #4: A’s vs. Brewers Game Thread. Following three straight disappointing performances to open spring training, the Athletics will host the Milwaukee Brewers this afternoon, each team looking for their first Cactus League victory. Right-handed pitcher Mason Barnett will start today for the A’s. The A’s acquired Barnett from the Kansas City Royals in exchange for reliever Lucas Erceg at the 2024 […] Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 2/23/26 | [Oakland A's Videos] - A's & Brewers Preview | Mason Barnett, Gage Jump, Colby Thomas & Johnny Doskow join Towny. A's Cast Live with Chris Townsend ahead of the A's & Brewers from Hohokam Stadium in Mesa!Guests:Mason Barnett - A's Right-Handed Starting PitcherGage Jump -... Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 2/11/26 | [SB Nation: Athletics Nation] - Athletics Community Prospect List: Barnett Finds His Spot At #11. *In an effort to make the nomination voting easier for everyone, I will comment, “NOMINATIONS”, and you may reply to that with your picks and upvote the player you’d like to see on the next nominee list. After just barely losing last round to outfielder Devin Taylor, right-handed starter prospect Mason Barnett was the clear winner for […] Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
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