MLB Player News

The Guardians optioned Heuer to Triple-A Columbus on Monday.

Heuer will cede his spot in the bullpen and on the active roster to right-hander Shawn Armstrong (groin), who was reinstated from the 15-day injured list in a corresponding move. After being recalled from Triple-A last Wednesday, Heuer made a lone appearance during his stint in the big leagues, striking out two batters and allowing one run on three hits and one walk in two innings in Sunday's 10-3 win over the Reds.

The Guardians reinstated Armstrong (groin) from the 15-day injured list Monday.

Armstrong will be taking over the 26-man active roster and bullpen spot of right-hander Codi Heuer, who was optioned to Triple-A Columbus. Shelved since April 26 due to a right groin strain, Armstrong proved his health after making two rehab appearances with Double-A Akron last week.

The Royals placed Bubic on the 15-day injured list Monday with left elbow soreness.

Per Anne Rogers of MLB.com, Bubic felt more sore than normal following his last start, prompting the decision to place him on the IL. The southpaw is optimistic his absence will be brief, but he still needs to undergo imaging before more is known. Even in a best-case scenario, Bubic is likely looking at longer than a minimum stay on the IL. He's collected a 4.10 ERA, 1.23 WHIP and 51:26 K:BB over 50.1 innings covering nine starts this season.

The Royals recalled Morgan from Triple-A Omaha on Monday.

Morgan will be up with the Royals for his third stint in the majors of the season. Over seven appearances for Kansas City, the righty reliever has yielded three earned runs on eight hits and six walks over 10.1 innings. He's been even more dominant in his 11.1 innings with Omaha, submitting a spotless ERA and 0.63 WHIP while striking out 18 batters.

Gipson-Long (undisclosed) has given up six earned runs on 12 hits and two walks while striking out two batters over 5.1 innings across his last two starts with Triple-A Toledo.

After Gipson-Long experiencing unspecified discomfort, Toledo scratched the right-hander from a scheduled start May 1, but he didn't require a trip to the injured list and slotted back into the rotation a week later. Gipson-Long has labored over his subsequent two starts, however, and now holds a 6.14 ERA and 1.64 WHIP across 22 innings at Triple-A for the season. Even while injuries are testing Detroit's rotation depth, Gipson-Long may not be viewed as a solution for the big club while he's struggled for Toledo.

Workman is out of the lineup for Monday's game against the Guardians.

After starting in three of the Tigers' previous four games, Workman will retreat to the bench while Detroit opens up a spot in the infield for Zack Short, who will cover shortstop in the series opener. Since being called up from Triple-A Toledo on May 10, Workman is getting on base at a weak .227 clip but has made his five hits count, smacking two home runs and a pair of doubles while driving in five runs.

The Orioles claimed Siani off waivers from the Dodgers on Monday, Matt Weyrich of The Baltimore Sun reports.

Siani has spent all of the 2026 campaign at Triple-A Oklahoma City, where he's slashed .225/.355/.303 with no home runs, five steals and a 17:30 BB:K over 29 games. The 26-year-old will give the Orioles some additional experienced outfield depth at Triple-A Norfolk.

The Orioles designated Espada for assignment Monday, Roch Kubatko of MASNSports.com reports.

The righty reliever will give up his spot on Baltimore's 40-man roster to outfielder Michael Siani, whom the Orioles claimed off waivers from the Dodgers. Espada has made just one appearance at the big-league level in 2026 and struggled over 15.1 innings between Triple-A Norfolk and Double-A Chesapeake, pitching to a 5.87 ERA, 1.76 WHIP and 10:13 K:BB.

Double-A Midland placed Lin on the 7-day injured list May 13 with a left quad strain.

Lin struck out a career-high 10 batters in six innings May 7 but was placed on the injured list before making another start. The 20-year-old southpaw boasts a 1.85 ERA, 0.91 WHIP and 43:9 K:BB in 34 innings across seven starts for the RockHounds.

Mariners general manager Justin Hollander said Sunday that Donovan will receive a platelet-rich plasma injection for his strained left groin as well as his adductor and is expected to resume baseball activity in 2-to-3 weeks, Daniel Kramer of MLB.com reports.

Seattle placed Donovan on the 10-day injured list Sunday, and given that he won't be on track to resume on-field activity for at least another two weeks, he's not a candidate to return to action when first eligible May 26 and will see his absence extend into June. Donovan previously missed about three weeks of action earlier this season after straining the same groin, so the Mariners could proceed more cautiously with bringing him back from the shelf this time around. For however long Donovan is out of action, Colt Emerson is expected to serve as the Mariners' everyday third baseman.