Kyle Muller - MLB News, Rumors, & Updates

Staying overseas The Chunichi Dragons of Nippon Professional Baseball re-signed Muller on Monday, Yakyu Cosmopolitan reports.

Impact Muller pitched well in his first season overseas, posting a 3.42 ERA and 110:37 K:BB over 129 innings. The left-hander will remain in Japan for another season rather than attempt a return to the majors, where he's struggled to gain traction with a 5.90 ERA.

DECEMBER 8, 2025 • ROTOWIRE

Headed overseas Muller signed a a contract Sunday with the Chunichi Dragons of Nippon Professional Baseball, Lindsay Crosby of AthlonSports.com reports.

Impact Muller elected free agency this offseason after being outrighted off the Athletics' 40-man roster and has decided to continue his career overseas. The 27-year-old left-hander has spent the last two seasons with the Athletics and tallied a 4.01 ERA in 49.1 innings during 2024.

DECEMBER 15, 2024 • ROTOWIRE

Hits open market Muller elected free agency Saturday.

Impact Muller was outrighted off the Athletics' 40-man roster Friday and will head to free agency rather than remaining in the organization. The left-hander made 21 relief appearances in the majors this year and had a 4.01 ERA, 1.18 WHIP and 36:10 K:BB across 49.1 innings.

NOVEMBER 3, 2024 • ROTOWIRE

Outrighted to Triple-A The Athletics outrighted Muller to Triple-A Las Vegas on Friday, Martin Gallegos of MLB.com reports.

Impact Because he's been outrighted before, Muller has the option to elect free agency. The left-hander made all 21 appearances for the A's in 2024 in relief, posting a 4.01 ERA and 36:10 K:BB across 49.1 frames.

NOVEMBER 1, 2024 • ROTOWIRE

Back with big club The Athletics selected Muller's contract from Triple-A Las Vegas on Wednesday.

Impact Muller was outrighted off the 40-man roster last month but has made his way back on after posting a 4.43 ERA and 12:5 K:BB over 20.1 innings at Las Vegas. Three of Muller's four appearances with Las Vegas were starts, and he went a combined 13 innings his last two times out. However, while he's stretched out to start, if needed, it's not clear what role the Athletics have planned for him.

SEPTEMBER 11, 2024 • ROTOWIRE

Outrighted off 40-man roster The Athletics outrighted Muller to Triple-A Las Vegas after he cleared waivers Wednesday.

Impact Muller has fewer than three years of big-league service time and hasn't been previously outrighted, so he didn't have the ability to reject the assignment to Triple-A after clearing waivers. Before the Athletics moved him off their 40-man roster Tuesday, Muller served mostly in a mop-up role over his 18 relief appearances for the big club, logging a 4.22 ERA, 1.27 WHIP and 35:9 K:BB in 42.2 innings. He could get stretched back out for starting duty as he heads back to Las Vegas.

AUGUST 14, 2024 • ROTOWIRE

DFA'd by Oakland The Athletics designated Muller for assignment Tuesday.

Impact The left-hander last pitched since Aug. 3 versus the Dodgers and surrendered six runs across one inning. Muller had a 3.02 ERA, 1.13 WHIP and 32:9 K:BB in 41.2 frames this season prior to that outing, but he won't retain his place on Oakland's 26-man and 40-man rosters.

AUGUST 13, 2024 • ROTOWIRE

Comes off IL The Athletics reinstated Muller (shoulder) from the 15-day injured list Sunday.

Impact Muller had been on the shelf since May 30 with left shoulder tendinitis but will rejoin Oakland after completing four rehab appearances with Triple-A Las Vegas. The southpaw covered three innings and tossed 61 pitches in his final outing for Las Vegas on Saturday, so the Athletics would presumably prefer not to use him in Sunday's series finale with the Orioles. Left-hander Jack O'Loughlin was optioned to Las Vegas in a corresponding move.

JULY 7, 2024 • ROTOWIRE

Hefty workload in latest rehab game Muller (shoulder) started Triple-A Las Vegas' loss to Oklahoma City on Tuesday, allowing two earned runs on two hits and a walk over 2.2 innings. He struck out five.

Impact While he had his share of trouble, Muller encouragingly worked up to 42 pitches during the outing, locating 32 of those offerings for strikes. Per the Associated Press, Muller returned to Oakland on Wednesday, and he and manager Mark Kotsay were slated to discuss how the veteran southpaw felt following the most voluminous of his three rehab appearances before making a decision on whether Muller would be activated at some point during the weekend series against the Orioles that begins Friday.

JULY 4, 2024 • ROTOWIRE

Beginning assignment Tuesday Muller (shoulder) will begin a rehab assignment at Triple-A Las Vegas on Tuesday, Martin Gallegos of MLB.com reports.

Impact Muller has been sidelined since the end of May due to tendinitis in his left shoulder, but he has now been given the go-ahead to test his shoulder in a game setting. The A's haven't specified how long they plan on keeping the 26-year-old in the minors, but he will likely require multiple rehab outings after being held out of action for nearly a month.

JUNE 23, 2024 • ROTOWIRE

A's place LHP Kyle Muller (shoulder) on injured list The Oakland A’s placed Kyle Muller on the 15-day injured list and recalled fellow left-hander Hogan Harris from Triple-A Las Vegas on Thursd...

MAY 30, 2024 • NEWSOBSERVER.COM

Shut down with shoulder injury The Athletics placed Muller on the 15-day injured list Thursday with left shoulder tendinitis.

Impact Muller looked to be a potential candidate to fill the opening in the Oakland rotation Thursday in Tampa Bay, but his shoulder injury will end up thwarting those plans. The Athletics called up lefty Hogan Harris from Triple-A Las Vegas in a corresponding move, and he could factor into the team's pitching plans for Thursday's series finale.

MAY 30, 2024 • ROTOWIRE

Takes first loss Wednesday Muller (0-1) took the loss in an extra-innings defeat at the hands of the Rockies on Wednesday, allowing two runs (one earned) on two hits over one inning.

Impact Muller was entrusted with preserving a 2-2 tie when he entered in the 12th inning, but he faltered almost immediately by giving up a go-ahead two-run home run to Ryan McMahon with inning-opening runner Jake Cave aboard. Oakland would halve its two-run deficit in the home half of the frame but fall short of knotting the score back up, saddling Muller with his first loss. The southpaw sports a respectable 3.94 ERA and 1.18 WHIP, but he's allowed at least one run in nine of his 12 appearances.

MAY 23, 2024 • ROTOWIRE

McMahon hits 2-run homer in the 12th inning to lift Colorado Rockies over Oakland Athletics 4-3

Ryan McMahon hit a two-run home run in the 12th inning and the Colorado Rockies hung on to beat the Oakland Athletics 4-3

MAY 23, 2024 • Associated Press

Another stellar long-relief effort Muller replaced starter Joe Boyle with two outs in the third inning of Monday's loss to the Red Sox and allowed an earned run on one hit and two walks over 5.1 innings. He struck o...

Impact Muller's previous starting experience has already come into play twice over the first five games, as manager Mark Kotsay has taken advantage of the southpaw's ability to work multiple innings to preserve his bullpen in lopsided shutout losses. Muller's impressive work over that pair of appearances -- he's pitched to a 1.13 ERA and 0.50 WHIP while allowing only two hits in eight innings -- could pay dividends for him down the line in the form of a rotation audition if starters such as Alex Wood or Boyle continue to struggle.

APRIL 2, 2024 • ROTOWIRE

Works in relief Saturday Muller tossed two innings out of the bullpen in Saturday's 3-2 loss to the Rangers, giving up two earned runs on four hits and two walks while striking out one.

Impact In his previous outing Sept. 3 versus the Angels, Muller started and kept the Halos off the board through the first three innings, but he melted down in the fourth, giving up three runs before being pulled. Since Muller carried a 7.62 ERA and 1.93 WHIP over 15 appearances (13 starts) on the season heading into the weekend, the Athletics opted to move him to the bullpen and gave Sean Newcomb an audition as a starter. Newcomb delivered four scoreless frames Saturday before turning the game over to Muller, though neither pitcher was ultimately stuck with the loss. In any case, with Newcomb making the most of his opportunity, look for him to get at least one more start while Muller sticks in a relief role.

SEPTEMBER 11, 2023 • ROTOWIRE

Tagged with three runs Muller yielded three runs on five hits and a walk over four innings during Sunday's win over the Angels. He struck out three and did not factor in the decision.

Impact Muller started with three scoreless frames before serving up a two-run shot to Eduardo Escobar in the fourth inning. Muller has coughed up nine runs over eight innings since returning to the starting rotation. For the season, he's sporting a 7.62 ERA with a 52:34 K:BB across 15 appearances (13 starts). Muller could get moved back to a long relief role with Luis Medina (finger) and Mason Miller (elbow) both expected to return soon.

SEPTEMBER 4, 2023 • ROTOWIRE

Receives start Sunday Muller is slated to start Sunday's game against the Angels in Oakland.

Impact Despite being lit up for six earned runs on nine hits and three walks over four innings in his return to the rotation this past Monday in Seattle, Muller will get a second straight start. A strong showing against the Angels could buy Muller some more time in the Oakland rotation, but another poor outing would put him at risk of a move to the bullpen or a demotion to Triple-A Las Vegas next week. The Athletics could get some reinforcement to their rotation as soon as next week with both Luis Medina (finger) and Mason Miller (elbow) tracking toward returns from the injured list.

SEPTEMBER 3, 2023 • ROTOWIRE

Touched up for six runs Muller (1-5) allowed six runs on nine hits and three walks while striking out six over four innings, taking the loss Monday versus the Mariners.

Impact Muller couldn't cool the Mariners' hot bats, instead suffering one of his worst outings of the year. This was just the second time he's given up multiple homers in a game this season, and the six runs allowed matched his season high. Muller is now at a 7.67 ERA, 1.96 WHIP and 49:33 K:BB through 63.1 innings over 14 appearances (12 starts). The Athletics' rotation is likely to remain a bit beat up into September, but it's unclear if that will be enough to earn Muller another start with Mason Miller (elbow) potentially available by the weekend if his rehab outing Tuesday goes smoothly.

AUGUST 29, 2023 • ROTOWIRE

Starting Monday Muller will start Monday's game against the Mariners, Martin Gallegos of MLB.com reports.

Impact Muller served as a long reliever during his last two appearances, but he'll make his first start since July 1 during Monday's series opener against the red-hot Mariners. Over his two outings since rejoining the big-league club, Muller has allowed three runs on seven hits and three walks while striking out six in 7.1 innings.

AUGUST 28, 2023 • ROTOWIRE

Martínez, Muller maximize opportunities on the mound OAKLAND -- With recent injuries to Luis Medina and Freddy Tarnok, the A’s are utilizing the openings in their rotation as an opportunity to...

AUGUST 24, 2023 • MLB.COM

Recalled from Triple-A Oakland recalled Miller from Triple-A Las Vegas on Wednesday.

Impact Muller will presumably be available in long relief Wednesday against the Cardinals as he returns to the Athletics' major-league roster, though there is a rotation opening next week. The 25-year-old left-hander has posted a rough 7.79 ERA, 1.96 WHIP and 37:27 K:BB over 52 innings (11 starts) this season in the bigs.

AUGUST 16, 2023 • ROTOWIRE

Optioned to Triple-A Muller was optioned to Triple-A Las Vegas on Sunday.

Impact Muller was recalled from Las Vegas on Saturday for his first big-league start in five weeks, and he'll return to the affiliate after he gave up three earned runs over five innings. The left-hander has a 7.79 ERA over 11 starts in the majors and 6.59 ERA in six starts at Triple-A this season, so he shouldn't be on the fantasy radar even if he rejoins Oakland's rotation later this summer.

JULY 2, 2023 • ROTOWIRE

Yields three runs in return Muller did not factor in the decision against the White Sox on Saturday, allowing three runs on six hits and four walks while striking out four batters over five innings.

Impact Muller was recalled Saturday after toiling at Triple-A Las Vegas for the past five-plus weeks. He managed to keep Oakland in the contest with five innings during which he allowed three runs, though the southpaw wasn't exactly effective in allowing six hits and tying a season high with four walks. Muller may remain in the rotation for now with James Kaprielian (shoulder) on the injured list, though the former hasn't been effective in the majors this season with a 7.79 ERA and 1.96 WHIP over 52 innings.

JULY 2, 2023 • ROTOWIRE

A's walk it off after Muller lights up radar gun OAKLAND -- When Kyle Muller experienced the euphoria of being named the A’s Opening Day starter during the final week of Spring Training, th...

JULY 2, 2023 • MLB.COM

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McMahon hits 2-run homer in the 12th inning to lift Colorado Rockies over Oakland Athletics 4-3