MLB Player News

Guenther (back) will begin a rehab assignment with Single-A Lakeland on Thursday, Evan Woodbery of MLive.com reports.

Guenther has been on the 7-day injured list all season with Triple-A Toledo due to lumbar spine inflammation. He'll eventually move up to Toledo once deemed ready and could help the Tigers' bullpen at some point later this season.

Tonkin (shoulder) will begin a rehab assignment with Triple-A St. Paul on Friday, Dan Hayes of The Athletic reports.

Tonkin landed on the 15-day injured list before the season with a right shoulder strain, but he's ready to test things out in a game setting. Barring a setback, the veteran reliever will have a shot to rejoin the Twins' bullpen before the end of April.

The Mariners optioned Klein to Triple-A Tacoma on Thursday.

Klein was with the big club for only one day and did not make an appearance. He is making room on the roster for Emerson Hancock, who has been recalled to start Thursday in Cincinnati.

Weissert (1-0) struck out three over 1.1 scoreless innings to earn the win in Wednesday's 1-0 victory over Tampa Bay.

Boston's bullpen dominated the Rays with Weissert kicking off the effort. He entered in the bottom of the fifth inning with two on and two out and struck out Yandy Diaz after falling behind 2-0. The righty then set down all three hitters in the sixth, including two by strikeout. It was the eighth scoreless appearance out of nine for Weissert, who owns a 2.08 ERA with 11 strikeouts and one walk over 8.2 innings.

Whitlock allowed one hit and struck out four over two scoreless innings to earn a hold in Wednesday's 1-0 win over the Rays.

The Red Sox received stellar work from the bullpen, which allowed one hit and struck out nine over 4.1 innings. Whitlock, who made his fifth multi-inning appearance, threw 24 pitches (21 strikes) to navigate the seventh and eighth innings for his second hold. That set up the save for Justin Slaten. Whitlock sports a 2.31 ERA with nine hits and four walks allowed while striking out 15 over 11.2 innings (seven outings).

Jackson earned a save against the Angels on Wednesday, retiring all three batters he faced in the ninth inning.

Jackson made quick work of Los Angeles to protect a two-run lead in the ninth frame, as he needed just six pitches to get through the inning. The right-hander was rewarded with his sixth save of the campaign, though this was his first save (and first save opportunity) since April 5. Jackson is tied for third in MLB in saves on the season, and since giving up three runs in his season debut March 27, the right-hander hasn't surrendered any runs over his subsequent eight outings, covering 7.2 frames.

Miller struck out all three batters he faced in a perfect inning to earn a save against the White Sox on Wednesday.

Miller entered the game with a two-run lead in the ninth inning and retired the side in order on 12 pitches. White Sox batters looked overwhelmed against the fireballing closer, as all three batters Chicago sent to plate went down on strikes. Miller got six whiffs on just 12 total pitches, and he has now struck out at least one batter -- and allowed zero runs -- in all six of his outings this season. He's dominated with a 12:1 K:BB over six frames to cement his status as one of the league's top closers.

Cruz picked up the save in Wednesday's win over the Royals after allowing one hit and one walk in two innings. He struck out two.

With both closer Devin Williams and setup man Luke Weaver having worked each of the past two days, Cruz was given a rare save chance and recorded six outs to get the job done. Cody Bellinger made a spectacular diving catch in right field for the final out of the game. Cruz has a strong 2.79 ERA, 0.93 WHIP and 16:3 K:BB over 9.2 innings this year, but he's unlikely to see more than a handful of save opportunities in 2025 as long as the top of the Yankees' bullpen is healthy.

Slaten earned the save after throwing a clean ninth inning in Wednesday's win over the Rays. He struck out two.

Slaten faced little resistance, retiring the side on just 11 pitches (eight strikes) for his second save of the season. Aroldis Chapman remains the favorite for save opportunities out of the Boston bullpen, although the left-hander can cede the occasional chance based on certain matchups. The right-handed Slaten, who now holds a 5.14 ERA, 0.71 WHIP and 5:1 K:BB through seven innings, was called upon to face three right-handed batters Wednesday.

Long (elbow) is expected to resume playing catch this weekend, MLB.com reports.

After Long was placed on the 15-day injured list Sunday due to left elbow inflammation, doctors advised him not to throw for five days while he waited for the swelling to subside. Assuming Long is cleared to start throwing again after the five-day shutdown, he likely won't require a lengthy ramp-up period, given that the Royals plan to deploy him as a 1-to-2-inning reliever once he's activated.