Mason Barnett| 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 |
| 3/02/26 | [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... |
| 12/02/25 | [SB Nation: Athletics Nation] - 2025 Athletics Season In Review: Mason Barnett. Today in our Season In Review series we take a look at one of the better pitching prospects in the organization and his first taste of the big leagues. Right-handed starter Mason Barnett has a high ceiling and could be a big contributor to a future A’s playoff squad, and we finally got to see […] Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 10/23/25 | [Baseball America] - Athletics’ Mason Barnett Gets A Grip On A Key Pitch Type. Mason Barnett struggled though most of 2025 but accomplished two things that set him up for future success. He made his MLB debut and found a sweeper grip he likes. Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 10/15/25 | [Fan Nation] - Early Red Flag For A's Rookie Mason Barnett?. Mason Barnett was terrific immediately after being acquired from the Kansas City Royals in 2024. Then he struggled in 2025. Did he show a red flag in the proces Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 9/26/25 | [SB Nation: Athletics Nation] - Game #160: Athletics versus Royals Game Thread. We’re finally here, folks. The final series of the season. The Athletics will wrap up their year at home in Sacramento with three games against the Kansas City Royals. Not much left to play for except pride. The squad will turn to rookie right-hander Mason Barnett for tonight s contest. It’ll be his fifth start […] Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 9/18/25 | [MLB: Film Room] - Mason Barnett tallies his first strikeout of the game | 09/17/2025. Mason Barnett strikes out Ceddanne Rafaela swinging on a fastball to end the second inning Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 9/06/25 | [Sports Illustrated] - Mason Barnett Escapes Brink of Disaster to Earn First MLB Win Against Angels. After a rocky first inning, A's starter Mason Barnett shut the Angels down to collect his first win Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 9/05/25 | [MLB: Athletics] - Barnett bounces back to earn first MLB victory. ANAHEIM – Mason Barnett notched his first Major League win in Friday’s 10-4 Athletics victory over the Angels at Angel Stadium, and it came on a night that began with him looking unlikely to even finish the first inning. Source: https://sportspyder.com/mlb/oakland-athletics/arti... |
| 9/05/25 | Angels face Athletics in battle to avoid AL West basement. Two teams in a battle to avoid finishing in the American League West's cellar square off Friday night when the last-place Athletics open a three-game series with the Los Angeles Angels in Anaheim, Calif. The fourth-place Angels (66-74), who have 22 games remaining, hold a 2 1/2-game lead over the A's (64-77) in the standings. Los Angeles also boasts an 8-2 lead in the series, including a three-game sweep of the Athletics in Anaheim on June 9-11. Mason Barnett (0-1, 11.25 ERA), ranked the A's No. 10 prospect by MLB Pipeline, will make his second career start and first on the road on Friday. Source: https://www.reuters.com/sports/baseball/angels-fac... |
| 9/01/25 | Auburn adds to its big-league roster. Mason Barnett became the 65th Auburn alumnus to play in the Major Leagues when he took the mound for the Athletics on Saturday night. Barnett is the first former Tiger to make his MLB debut in the 2025 season and the ninth to play in the big leagues this year, joining Ryan Bliss, Davis Daniel, Richard Fitts, Bailey Horn, Edouard Julien, Casey Mize, Joshua Palacios and Daniel Robert. Source: https://www.al.com/sports/2025/09/auburn-adds-to-i... |
| 8/30/25 | Game 137 Game Day Thread – Texas Rangers @ West Sacramento Athletics. A fella named Mason Barnett makes his MLB debut against the Rangers Source: https://sports.yahoo.com/article/game-137-game-day... |
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