Mason Barnett - MLB News, Rumors, & Updates

Works six innings Barnett allowed four runs on four hits and two walks while striking out eight over six innings in a no-decision versus the Astros on Thursday.

Impact Barnett gave up a three-run home run to Lucas Spence and a solo shot to Isaac Paredes. The 25-year-old Barnett was most effective as a reliever this year while struggling in a starting role later in the campaign. He will likely end 2026 with a 7.02 ERA, 1.66 WHIP and 50:30 K:BB over 50 innings across 20 games (six starts). He'll have minimal fantasy appeal as long as he's calling Sutter Health Park his home field in the majors.

SEPTEMBER 25 • ROTOWIRE

Spence hits first 3 homers of career, helps Astros survive Athletics 7-5 to keep playoff hopes alive

Lucas Spence hit the first three home runs of his major league career as the Houston Astros outlasted the Athletics 7-5

SEPTEMBER 25 • Associated Press

Handed another start Barnett will start Thursday's game against the Astros in Sacramento.

Impact The Athletics summoned Barnett from Triple-A Las Vegas last Friday to make his first appearance for the big club in more than a month, and the 25-year-old right-hander languished in a 5-3 loss to the Guardians. He took a no-decision in the start, coughing up three runs on seven hits and four walks in 3.1 innings to bring his ERA and WHIP up to 7.16 and 1.75, respectively, over his 19 appearances for the Athletics on the season. Despite the poor showing, Barnett will receive one last turn through the rotation as the Athletics kick off a four-game set versus Houston to close out the campaign.

SEPTEMBER 24 • ROTOWIRE

Bolte leads Athletics against the Astros after 4-hit game

The Athletics take on the Houston Astros after Henry Bolte had four hits against the Angels on Wednesday

SEPTEMBER 24 • Associated Press

Barnett will get chance to show adjustments down the stretch for A's CLEVELAND -- Athletics pitcher Mason Barnett threw his first professional complete game in his last start for Triple-A Las Vegas, allowing t...

SEPTEMBER 19 • MLB.COM

Yields three runs in no-decision Barnett did not factor into Friday's decision against Cleveland, allowing three runs on seven hits and four walks while striking out four across 3.1 innings.

Impact Barnett was promoted from Triple-A Las Vegas ahead of Friday's start, his fifth of the season and 10th of his major-league career. He kept the Guardians off the board through the first three innings but proceeded to allow four of the first five batters he faced in the fourth on base, resulting in three runs scored for Cleveland. Barnett has allowed at least three earned runs in six of his last seven major-league outings, and he has a 7.16 ERA and 1.75 WHIP across 44 innings this season. Assuming he stays with the big club, Barnett is lined up to face the Astros at home next weekend.

SEPTEMBER 19 • ROTOWIRE

José Ramírez homers, reaches 1,000 RBIs as Guardians down A's 5-3, move into first alone in Central

José Ramírez and rookie Travis Bazzana homered and Joey Cantillo pitched six scoreless innings as the Cleveland Guardians rallied to beat the Athletics 5-3 and moved one game ahead...

SEPTEMBER 19 • Associated Press

Officially recalled for Friday's start The Athletics recalled Barnett from Triple-A Las Vegas on Friday.

Impact Barnett will start Friday's game against Cleveland, and Joe Rock has been optioned to Las Vegas in a corresponding move. Barnett has appeared in 18 games with the Athletics this season, making four starts, and owns an ugly 7.08 ERA, 1.62 WHIP and 38:24 K:BB across 40.2 innings. He's started each of his last four appearances with the club and has functioned as a starter in Triple-A, so Barnett should be stretched out.

SEPTEMBER 18 • ROTOWIRE

Athletics look to break 3-game road skid, play the Guardians

The Athletics visit the Cleveland Guardians looking to end a three-game road skid

SEPTEMBER 18 • Associated Press

Starting Friday The Athletics will recall Barnett from Triple-A Las Vegas to start Friday's game against the Guardians, Martin Gallegos of MLB.com reports.

Impact Barnett owns a 7.08 ERA and 1.62 WHIP through 40.2 innings in the majors this season. He hasn't been much better in four starts since returning to the minors in mid-August (6.97 ERA, 1.84 WHIP), but the A's will bring him back onto the active roster to fill the void in their rotation. He'll be welcomed back to the big leagues by a Guardians lineup that's been trending upward while posting a .748 OPS over its last 10 games.

SEPTEMBER 17 • ROTOWIRE

Optioned back to Triple-A The Athletics optioned Barnett to Triple-A Las Vegas on Tuesday.

Impact The transaction comes one day after Barnett was lit up for six runs over 2.2 innings in a loss to the Royals. With Jeffrey Springs (hip) slated to rejoin the Athletics' rotation this week, Barnett will lose his spot among the starting five. He's logged a 7.08 ERA, 1.62 WHIP and 38:24 K:BB over 40.2 frames in 2026.

AUGUST 18 • ROTOWIRE

How Athletics Can Fix Struggles at End of Rotation After another rough outing from Mason Barnett, the Athletics need to figure out how to contain the struggles at the end of the rotation.

AUGUST 18 • SI.COM

Ineffective in fourth loss Barnett (1-4) took the loss against the Royals on Monday, allowing six runs on seven hits and four walks in 2.2 innings. He struck out two.

Impact Barnett struggled mightily Monday, landing only 45 of his 83 pitches for strikes in a laborious outing. The right-hander isn't making a strong case to maintain his rotation spot once Jeffrey Springs (hip) returns from the injured list, surrendering three runs or more in four consecutive appearances while failing to log a quality start during that span. Through 40.2 innings, Barnett has a poor 7.08 ERA, 1.62 WHIP and 38:24 K:BB.

AUGUST 18 • ROTOWIRE

Bobby Witt Jr. homers and scores 4 runs in the Royals' 9-5 win over the Athletics

Bobby Witt Jr. had a two-run homer, an RBI double and scored four times, leading the Kansas City Royals to a 9-5 victory over the Athletics on Monday night

AUGUST 18 • Associated Press

Royals host the Athletics in first of 4-game series

The Kansas City Royals start a four-game series at home against the Athletics on Monday

AUGUST 17 • Associated Press

Burned by the long ball Tuesday Barnett (1-3) took the loss Tuesday against the Rays, allowing six runs (five earned) on five hits and three walks while failing to record a strikeout over four innings.

Impact Barnett surrendered a two-run homer to Junior Caminero in the first inning before running into more trouble in the fourth, when Taylor Walls and Yandy Diaz launched back-to-back bombs. The right-hander recorded just one whiff on 67 pitches as he failed to punchout a single hitter. He has now allowed three home runs in consecutive outings and has surrendered 14 runs (13 earned) across 13.1 innings while working as a traditional starter over his last three appearances. Barnett owns a 6.50 ERA, 1.44 WHIP and 35:18 K:BB across 36 innings this season. He'll need to show out in his next scheduled outing against a weak Kansas City offense if he wants to make any case to remain in the rotation.

AUGUST 12 • ROTOWIRE

Taylor Walls homers from each side of the plate to make Tampa Bay Rays history

Taylor Walls homered from each side of the plate in a 12-4 victory at the Athletics on Tuesday night, becoming the first switch-hitter to do that twice for the AL-leading Tampa Bay...

AUGUST 12 • Associated Press

Walls HRs from both sides of the plate for 2nd time in his career as Rays beat A's 12-4

Taylor Walls homered from both sides of the plate for the second time in his career, Nick Martinez tossed a complete game and the Tampa Bay Rays won their eighth straight game, 12-...

AUGUST 12 • Associated Press

Athletics bring home losing streak into matchup against the Rays

The Athletics aim to end their six-game home skid with a victory over the Tampa Bay Rays

AUGUST 11 • Associated Press

Crushed by long ball in second loss Barnett (1-2) took the loss against the Reds on Thursday, allowing five runs on five hits and three walks in 4.1 innings. He struck out seven.

Impact Barnett was inefficient Thursday, landing just 47 of his 82 pitches for strikes, and he served up a staggering three home runs in hitter-friendly Cincinnati. The right-hander did fan a season-high seven for a positive note, but he'll need to do a better job of keeping the ball in the yard if he wants to remain in the Athletics' rotation. Barnett appears close to being able to handle a traditional starter's workload, but his 5.56 ERA, 1.38 WHIP and 36:17 K:BB over 34 innings may not leave him with much streaming appeal against the Rays his next time out.

AUGUST 6 • ROTOWIRE

Reds homer four times to back Andrew Abbott, beat the Athletics 6-5 to complete sweep

Elly De La Cruz hit his fourth career leadoff home run — one of four homers by Cincinnati — and the Reds beat the Athletics 6-5 to complete a three-game sweep

AUGUST 6 • Associated Press

Athletics look to break 7-game losing streak, play the Reds

The Athletics come into the matchup with the Cincinnati Reds as losers of seven in a row

AUGUST 6 • Associated Press

Garnering another start Athletics manager Mark Kotsay said Sunday that Barnett will maintain his spot in the rotation during the upcoming week, Jason Burke of Roundtable.io reports.

Impact After coming up from Triple-A Las Vegas on July 22, Barnett entered the rotation last weekend and tossed 3.1 innings of bulk relief in a 2-0 loss to the Twins. He then handled a traditional starting role for his next appearance Thursday, limiting a red-hot Red Sox squad to three runs on four hits and one walk while striking out six over five innings. He's earned himself a more permanent stay in the rotation, even though the Athletics will get J.T. Ginn (finger) back from the 15-day injured list Tuesday. Kotsay confirmed that the Athletics won't be moving to a five-man rotation, so one of Jeffrey Springs, Jack Perkins, Jacob Lopez and Gage Jump would appear to be in line to lose his starting role.

AUGUST 2 • ROTOWIRE

Barnett impresses in first start of year, but A's can't pull out the win WEST SACRAMENTO -- The Athletics had some of the ingredients required to secure a series split with the Red Sox on Thursday night, from the...

JULY 31 • MLB.COM

Fans six in no-decision Barnett allowed three runs on four hits and one walk while striking out six batters over five innings in a no-decision against Boston on Thursday.

Impact After working in bulk relief in his previous appearance, Barnett made his first start of the season Thursday. He got through four scoreless frames before fading in the fifth, when the Red Sox tagged him for three runs on three hits. That ended up being his final frame, and he threw 73 total pitches, his highest mark in a big-league game so far this season. Barnett may not be ready for a completely full workload yet, and he could return to the bullpen when J.T. Ginn (finger) is activated from the IL, which could happen early next week.

JULY 31 • ROTOWIRE

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