The Mariners acquired Simpson from the Marlins on Monday in exchange for cash considerations.

Simpson reached the big leagues for the first time in 2025 but was unable to work his way into a high-leverage role with Miami after submitting a 7.34 ERA and 1.83 WHIP in 30.2 innings. The southpaw yielded five home runs over 31 appearances and walked 14.6 percent of the batters he faced, but he generated ground balls at a high rate (59.6 percent) and struck out hitters at a decent clip (23.8 percent). Seattle recognized enough potential in Simpson to bring him aboard as an extra left-handed option out of the bullpen and opened up a 40-man roster spot for him by placing Logan Evans (elbow) on the 60-day injured list.

Watson is scheduled to begin a throwing program Monday as he works his way back from arthroscopic right elbow surgery, Evan Petzold of the Detroit Free Press reports.

Watson is in camp as a non-roster invitee, but he may not have enough time to complete his rehab and see Grapefruit League action before the end of the spring. Whenever he's back to full health, He's likely to head to Triple-A Toledo, where he'll presumably settle back into a starting role. After beginning last season as a reliever, Watson held his own upon moving into the Toledo rotation, logging a 3.20 ERA while punching out 59 batters over 70.1 innings across 14 starts.

The Tigers announced Sunday that Darnell (hip) has been playing catch five times a week and is also taking part in a running progression, Evan Petzold of the Detroit Free Press reports.

Darnell has opened camp behind the team's healthy bullpen candidates after undergoing left hip labral repair surgery in September. The 28-year-old could be ready to get back onto a mound soon, but he still looks like he'll face an uphill battle to win a spot on the Opening Day roster.

Sborz (shoulder) tossed a bullpen session Saturday, Jeff Wilson of AllDLLS.com reports.

The 32-year-old righty looks to be healthy for the start of spring training after he was limited to just a handful of minor-league rehab appearances in 2025 after undergoing surgery on his throwing shoulder in November 2024. After the Rangers non-tendered him in November, Sborz re-signed with the organization on a minor-league deal in January. He'll need to regain his pre-surgery velocity and command in order to make a serious run at a spot in the Opening Day bullpen.

Rays manager Kevin Cash said Sunday that Uceta arrived at camp with a "cranky shoulder" and won't be available to pitch for the Dominican Republic in the World Baseball Classic as a result, Marc Topkin of the Tampa Bay Times reports.

Cash labeled the decision to pull Uceta out of the WBC as precautionary and indicated that the Rays fully expect the right-hander to be ready to go for Opening Day. The team heads into the upcoming season without a set closer after letting Pete Fairbanks walk in free agency, and Uceta could factor into the team's late-inning mix if his shoulder isn't a concern. The 28-year-old netted one save and 21 holds over 70 appearances last season while racking up an impressive 103 strikeouts across 76 frames.

The Orioles aren't going to push Bautista (shoulder) to pitch in 2026, per MLB.com.

The hard-throwing right-hander is progressing well from right shoulder surgery in August of 2025 to repair a torn rotator cuff and torn labrum, but Baltimore has no intentions to rush Bautista back into the fray. His throwing progression will be worth monitoring, but the expectation remains that Bautista won't be much of a fantasy factor in 2026, if at all. Ryan Helsley signed a two-year contract with the O's in November and is all set to start the new season with a big opportunity to bounce back as the club's top closer, after limping to a 7.20 ERA through 20 regular-season innings with the Mets to finish last year.

The Orioles placed Selby on the 60-day injured list Saturday due to right shoulder inflammation, Rich Dubroff of BaltimoreBaseball.com reports.

Selby's move to the 60-day IL will ensure he remains sidelined until at least late May and opens up a spot on the 40-man roster for Jackson Kowar, who was acquired in a trade with the Twins on Saturday. Selby isn't reportedly dealing with any structural damage, which increases the likelihood that he could return to the Orioles' bullpen after a minimum-length IL stint.

Hahn signed a minor-league contract with the Blue Jays on Saturday that includes an invitation to big-league spring training.

Hahn spent most of his time with the Mariners' Triple-A affiliate last season, where he logged a 6.40 ERA and 1.68 WHIP across 32.1 innings. Barring a significant turnaround during spring training, the 36-year-old is likely to return to Triple-A to begin 2026.

The Twins traded Kowar (shoulder) to the Orioles on Saturday in exchange for cash.

The Twins DFA'd Kowar on Thursday to make room for Anthony Banda, and the former will now find a home on Baltimore's 40-man roster. The 29-year-old righty finished 2025 with a 4.23 ERA and 1.24 WHIP across 17 innings with the Mariners and will have to break camp with the O's in order to keep his spot on the 40-man roster. Colin Selby (shoulder) was placed on the 60-day IL in a corresponding move.

Chafin signed a minor-league contract with the Twins on Saturday that includes an invite to big-league spring training, Dan Hayes of The Athletic reports.

Chafin turned in a 2.41 ERA over 33.2 innings with the Nationals and Angels in 2025, though his 1.43 WHIP suggests that a handful of lucky breaks helped to prevent runs from scoring against him. Minnesota's bullpen competition is wide open, so the left-hander could land an Opening Day roster spot with a strong Grapefruit League showing.