Athletics' Mason Barnett: Does fine in last start of season
Rotowire
Barnett allowed three runs on three hits and two walks while striking out three over 5.2 innings in a no-decision versus the Royals on Friday.
This was the longest of Barnett's five starts in the majors so far, and his only real mistake resulted in a three-run home run off the bat of Jonathan India in the fourth inning. Through 22.1 innings in the majors, Barnett has posted a 6.85 ERA, 1.66 WHIP and 18:11 K:BB while also allowing three home runs. The right-hander figures to contend for a rotation spot next year.
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Athletics' Mason Barnett: Another short start Wednesday
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Barnett didn't factor into the decision in Wednesday's loss against the Red Sox, allowing three runs (two earned) on five hits and three walks while striking out two over four innings
The rookie right-hander gave up a run in the first inning before serving up a solo homer to Rob Refsnyder in the second. While he managed to avoid further damage, Barnett has now surrendered 14 runs in just 16.2 innings since his call-up, struggling to find consistency at the major-league level to the tune of a 7.56 ERA, 1.92 WHIP and 15:9 K:BB across four starts. The 24-year-old has tallied more than four innings only once in those four outings. Assuming he retains his rotation spot, Barnett is slated to face the Astros in his next scheduled start.
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Athletics' Mason Barnett: Short outing vs. Boston
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Barnett did not factor into the decision Wednesday against the Red Sox, allowing three runs on seven hits and a walk across 3.2 innings. He struck out four.
Barnett's major-league career has gotten off to a rocky start -- the right-hander's given up 12 runs across 12.2 innings in his first three starts. Barnett is currently scheduled to face the Red Sox again on the road in his next start, though it's unclear how long he'll remain in the rotation with Jacob Lopez (elbow) expected to return before the end of the season.
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Athletics' Mason Barnett: Collects first win
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Barnett (1-1) allowed four runs on three hits and five walks while striking out eight over five innings to earn the win versus the Angels on Friday.
The Athletics' third-inning explosion gave Barnett enough run support, and the rookie right-hander was able to grind out five innings on 102 pitches (55 strikes) to secure his first win in the majors. It was still far from an encouraging performance for the 24-year-old, who has now given up nine runs with a 9:5 K:BB over his first nine innings in the majors. The Athletics are far out of the wild-card race and have a handful of injuries in the rotation, so there's some room for Barnett to learn on the job. He's tentatively projected to make his next start at home versus the Red Sox.
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Athletics' Mason Barnett: Receiving another start
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Barnett is slated to start Friday's game against the Angels in Anaheim.
After being called up from Triple-A Las Vegas, Barnett made his first MLB start this past Saturday, taking a loss to the Rangers while allowing five earned runs on eight hits and no walks over four innings. The 25-year-old righty will get a chance to redeem himself Friday, but another poor showing could put him at risk of losing his spot in the Athletics rotation.
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Athletics' Mason Barnett: Poor first impression in debut
Rotowire
Barnett (0-1) allowed five runs on eight hits and struck out one without walking a batter over four-plus innings to take the loss versus the Rangers on Saturday.
Barnett gave up three runs in the second inning, and he was chased in the fifth after Wyatt Langford's solo home run. Barnett was limited to 66 pitches (42 strikes) in his major-league debut. He has a 5.83 ERA and 123:60 K:BB across 117.1 innings with Triple-A Las Vegas this year, a potential harbinger of how things might go for him in the majors. If he gets another start, which is possible due to the numerous injuries in the Athletics' rotation, he's tentatively projected to face the Angels on the road.
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Athletics' Mason Barnett: Making MLB debut Saturday
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Athletics manager Mark Kotsay said Barnett will start Saturday's game against the Rangers in Sacramento, Jessica Kleinschmidt of Baseball America reports.
Barnett has spent most of the 2025 season with Triple-A Las Vegas, where he accrued a 5.83 ERA, 1.56 WHIP and 123:60 K:BB across 117.1 innings. After being called up from Triple-A on Tuesday, Barnett went unused out of the bullpen over the last few days and will now step into the rotation spot vacated by lefty Jacob Lopez (elbow), who was placed on the IL earlier this week. Though Barnett is regarded as one of the Athletics' top pitching prospects, his poor numbers in the Pacific Coast League make it difficult to depend on him as a streaming option in his MLB debut, especially while pitching in a hitter-friendly venue in Sacramento.
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Athletics' Mason Barnett: Selected from Vegas
Rotowire
The Athletics selected Barnett's contract from Triple-A Las Vegas on Tuesday.
The 24-year-old Barnett has spent the entire season at Las Vegas, turning in a 5.83 ERA and 1.56 WHIP across 117.1 innings through 24 appearances (22 starts). Despite his unimpressive statline, he'll join the big-league roster for the first time in his career to fill in for Jacob Lopez (elbow), who landed on the IL in a corresponding move. If Barnett takes Lopez's place in the Athletics' rotation, the former would be lined up to make his MLB debut Saturday against Texas. Otherwise, he could be used as a multi-inning relief option.
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Athletics' Mason Barnett: Traded to Athletics
Rotowire
The Royals traded Barnett, Will Klein and Jared Dickey to Oakland on Tuesday in exchange for Lucas Erceg, Mark Feinsand of MLB.com reports.
A third-round draft pick in 2022, Barnett has spent all of 2024 with the Royals' Double-A affiliate, making 18 appearances (17 starts) with a 4.21 ERA and a 105:35 K:BB across 87.2 innings. The right-hander figures to report to the Athletics' Double-A affiliate.
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Royals' Mason Barnett: Strong showing at Double-A
Rotowire
Barnett logged a 3.58 ERA, 1.19 WHIP, 43 strikeouts and a 50 percent groundball rate in 32.2 innings (seven starts) for Double-A Northwest Arkansas.
Among the college pitchers the Royals have drafted in recent years, Barnett had the best statistical season while splitting time between High-A and Double-A. A burly 6-foot righty who turns 23 in November, Barnett leans heavily on his mid-90s fastball and mid-80s slider. He built up to 114.2 innings this year, so he won't face any workload restrictions in 2024 while having a chance to pitch his way to the majors.
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