MLB Player News

Mize (adductor) tossed five innings, allowing one run on three hits and a walk while striking out five during his rehab start with Single-A Lakeland on Tuesday, Chris McCosky of The Detroit News reports.

Mize was making what could be his first and last start during his minor-league rehab assignment, notching 36 strikes over 55 total pitches. The right-hander appears to be on track toward being activated from the 15-day injured list when first eligible Sunday in Cleveland.

Taillon (hamstring) is expected to be sidelined until after the All-Star break, Vinnie Duber of the Chicago Sun-Times reports.

Taillon landed on the 15-day injured list with a left hamstring strain Tuesday, and manager Craig Counsell outlined that the right-hander is not expected to be able to return to action until mid-to-late July. Javier Assad will likely replace Taillon in the Cubs' starting rotation in the meantime, while Shota Imanaga is now the last remaining arm from the team's Opening Day rotation that hasn't spent time on the IL this season.

The Athletics recalled Estes from Triple-A Las Vegas on Tuesday.

Estes has accumulated a 5.95 ERA and 1.49 WHIP in 59 innings (12 starts) at Triple-A this season, but he'll be welcomed back into the majors as the replacement on the active roster for Kade Morris, who was optioned to Las Vegas. Though the demotion of Morris creates a void in the big-league rotation, it's unclear if Estes will be the top choice to fill the open spot. Along with Estes, Mason Barnett is a candidate to join the rotation after striking out seven over four shutout innings of long relief in his most recent appearance Friday in Houston. With an off day on tap Thursday, the Athletics could get by without a fifth starter until next week, so Estes will likely be available out of the bullpen for at least the next couple of games.

The Athletics optioned Morris to Triple-A Las Vegas on Tuesday.

Morris gave up nine earned runs in just four innings during his MLB debut Saturday, and he'll now be sent back down to the minors in favor of Joey Estes. Morris owns a 4.45 ERA and 1.48 WHIP in 60.2 innings at Las Vegas and could rejoin the A's at some point later this summer if he gets back on track with the Aviators.

Kochanowicz will undergo Tommy John surgery, Erica Weston of Bally Sports West reports.

Kochanowicz landed on the injured list Sunday due to right elbow inflammation, and an MRI revealed Tuesday that he suffered a torn UCL. The procedure will bring his season to an early end and force him to miss most, if not all, of the 2027 campaign as well.

The Cubs placed Taillon on the 15-day injured list Tuesday with a left hamstring strain, Vinnie Duber of the Chicago Sun-Times reports.

Taillon was able to make it through just one inning during his start Sunday before exiting with a strained hamstring, and he'll now officially have to wait at least two more weeks before making his next appearance on a big-league mound. Ethan Roberts was recalled from Triple-A Iowa in a corresponding move, and Javier Assad, who pitched 6.1 innings following Taillon's removal Sunday, is a likely candidate to move into the Cubs' rotation.

Waldrep (elbow) had his rehab assignment transferred to Double-A Columbus, where he will make his next start Thursday, Grant McAuley of the Marietta Daily Journal reports.

The right-hander covered two frames in both of his rehab outings in the rookie-level Florida Complex League, setting the stage for him to move to the upper minors. Those appearances marked Waldrep's first game action since September as he works his way back from an offseason elbow procedure. He'll likely require a couple more minor-league starts after Thursday before making his 2026 debut for Atlanta.

The Royals activated Kolek from the family medical emergency list Tuesday.

Kolek was away from the club for a few days while tending to a personal matter, but he's back in time to start Tuesday's contest at home versus the Rangers. The right-hander has logged a 3.32 ERA, 0.97 WHIP and 27:8 K:BB over 38 innings covering six starts for Kansas City this season.

Toronto activated Cease (hamstring) from the 15-day injured list to start Tuesday's game against the Phillies, Keegan Matheson of MLB.com reports.

After landing on the IL with a strained hamstring May 25, Cease will rejoin the Blue Jays' rotation having made one rehab start at Triple-A. Before landing on the IL, the 30-year-old recorded a 3.05 ERA, 1.21 WHIP and 92:26 K:BB in 62 innings. Toronto will send down Adam Macko to Triple-A Buffalo in order to make room for Cease on the active roster.

The Brewers transferred Priester (shoulder) from the 15-day injured list to the 60-day IL on Saturday.

Priester has been on the shelf all season while recovering from symptoms of thoracic outlet syndrome, so his move to the 60-day IL was merely procedural. The right-hander remains in the midst of a rehab assignment, but he's shown little sign of regaining the form that made him a vital part of the Milwaukee rotation in 2025. After struggling to a 21.60 ERA and 3.60 WHIP over 10 innings in six rehab starts between High-A Wisconsin and Triple-A Nashville from April 22 through May 27, Priester recently had his assignment transferred to the Arizona Complex League. He was once again lacking in command in his second appearance in the ACL on Monday, spotting just 35 of his 73 pitches for strikes over 2.2 innings while generating four punchouts and yielding three earned runs on one hit and five walks. He also hit a batter and threw three wild pitches.