The Orioles announced that Mateo underwent season-ending UCL reconstruction surgery on his left elbow Wednesday, Roch Kubatko of MASNSports.com reports.
Mateo hadn't played since July 23 with a left elbow subluxation before eventually requiring the procedure. He'll finish the 2024 campaign with a .229/.267/.401 slash line to go with five home runs and 13 stolen bases across 68 games. The 29-year-old will enter his final year of arbitration eligibility this offseason and will likely fill a utility role if the Orioles opt to keep him on the roster in 2025.
The Orioles transferred Mateo (elbow) from the 10-day injured list to the 60-day IL on Tuesday, Rich Dubroff of BaltimoreBaseball.com reports.
Mateo was placed on the 10-day injured list Thursday with a left elbow subluxation and he will now be forced to miss two months of action while recovering. He'll be eligible to return from the IL in late September if he's able to avoid any setbacks. With Mateo unavailable, top prospect Jackson Holliday is set to be called up from Triple-A Norfolk to join the major-league roster in Baltimore on Wednesday ahead of the team's series finale with the Blue Jays. Holliday will likely take over as the Orioles' primary second baseman.
