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

EDGE Analysis

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.

Muller agreed to a contract Sunday with the Chunichi Dragons of Japan's Nippon Professional Baseball, Yahoo Japan reports.

EDGE Analysis

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 had seen action at the MLB level each of the past four seasons with Atlanta and Oakland, compiling a 5.90 ERA and 1.57 WHIP over 175.1 innings.

Muller elected free agency Saturday.

EDGE Analysis

Muller was outrighted off the Athletics' 40-man roster Friday and will head to free agency rather than remain 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.

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

EDGE Analysis

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.

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

EDGE Analysis

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.

The Athletics outrighted Muller to Triple-A Las Vegas after he cleared waivers Wednesday.

EDGE Analysis

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.

The Athletics designated Muller for assignment Tuesday.

EDGE Analysis

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.

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

EDGE Analysis

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.

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.

EDGE Analysis

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 upcoming weekend series against the Orioles.

Muller (shoulder) allowed an earned run on two hits and two walks over 1.1 innings in a relief appearance for Triple-A Las Vegas against Sacramento on Friday. He struck out one.

EDGE Analysis

Muller's second rehab outing didn't go quite as smoothly as his first, when he fired a scoreless frame against the River Cats on Tuesday. Nevertheless, the veteran southpaw was able to work up to 31 pitches, and although he located only 17 for strikes, he seemingly corroborated his shoulder is capable of handling a normal relief workload. Consequently, Muller may not be much longer for his rehab assignment, with the potential to be activated at some point in the coming days if he doesn't experience any residual effects from Friday's volume.