Cubs vs Pirates

Horton will miss roughly 16 months after undergoing Tommy John surgery Thursday, so the Cubs will stash him away on the 60-day IL for the rest of the year. Corbin Martin was selected from Triple-A Iowa in a corresponding move.

Thielbar had to come out of Thursday's game against the Phillies early after suffering an injury on the mound, and he'll now be forced to sit out at least another 15 days. The 39-year-old had been serving as Chicago's closer with Daniel Palencia (oblique) on the injured list, but that responsibility could be passed on to Ben Brown for the time being. Vince Velasquez was selected from Triple-A Iowa to fill the open spot in the Cubs' bullpen.

Harvey had progressed to throwing off a mound while working his way back from ticeps inflammation, but he reported soreness after Thursday's session. An MRI revealed a stress reaction Friday, which will keep the 31-year-old shut down for the next month. A clearer timeline for his return may begin to emerge once he's cleared to restart his throwing program.

Boyd did not need a full repair of his meniscus, with Cubs manager Craig Counsell saying the surgery was "minor" and the club hopes to get the left-hander back in around six weeks. Jordan Wicks (elbow) and Javier Assad are candidates to grab Boyd's spot in the Cubs' rotation.

Hodge will miss the remainder of the 2026 season after undergoing UCL reconstruction surgery Tuesday, so the Cubs will stash him away on the 60-day IL and give his 40-man roster spot to Nicky Lopez.

Martin was placed on the 15-day injured list over the weekend due to left elbow inflammation, but it's since been reported that he'll need more than the minimum to return to full strength. The Cubs are weathering quite the injury storm in the bullpen, as Daniel Palencia (lat), Caleb Thielbar (hamstring) and Hunter Harvey (triceps) are also on the shelf.

Merryweather has been shelved since spring training with a left hamstring strain, but he's finally ready for game action. The veteran reliever is signed to a minor-league contract with the Twins and will eventually move up to Triple-A St. Paul.

Devenski would have been eligible to return from his two-game suspension Thursday, but he'll instead spend the next couple of weeks on the injured list due to an undisclosed illness. Cam Sanders was recalled from Triple-A Indianapolis in a corresponding move.

Mangum was a late scratch from Thursday's lineup due to a hamstring issue, and additional testing later revealed his injury to be a strain. He'll now be held out of action until at least May 16, and Nick Yorke will come up from Triple-A Indianapolis to replenish Pittsburgh's bench depth.

Robertson logged 75 plate appearances in the big leagues last season between stops with the Blue Jays and White Sox, but after being claimed off waivers by the Orioles over the winter and later outrighted off the 40-man roster, he never appeared to be a strong candidate to break camp with Baltimore. He's slated to serve as organizational outfield depth at Triple-A Norfolk in 2026.