The White Sox announced a series of roster moves this morning, highlighted by the club selecting the contract of veteran right-hander Brad Keller. Right-hander Deivi Garcia was designated for assignment to make room for Keller on the 40-man and active rosters. Additionally, Chicago announced that right-hander Jonathan Cannon had been optioned to Triple-A Charlotte. Right-hander Prelander Berroa was recalled to take Cannon’s place on the active roster.
The news leaves Keller poised to make his White Sox debut in the coming days as he likely steps into the rotation in Cannon’s stead. The 28-year-old signed a minor league deal with Chicago in early March after lingering on the free agent market throughout the offseason following a difficult 2023 campaign. Keller was limited to just 45 1/3 innings of 4.57 ERA baseball last year due to shoulder surgery and a thoracic outlet syndrome diagnosis, which MLB.com’s Mark Feinsand noted last month necessitated its own surgery back in October.
Surgery to correct TOS has rarely seen players return to the majors and enjoy success, with Stephen Strasburg and Chris Archer among the arms who have seen their careers impacted by the procedure in recent years. One example of a player who has returned effectively is Arizona right-hander Merrill Kelly, who stands as a prime example of the fact that not all types of TOS have the same long-term outlook. It’s not clear which type of TOS Keller went under the knife due to, though his decent 4.50 ERA in 16 innings of work at the Triple-A level across three starts this season gives reason for optimism that he could return to form as a viable back-of-the-rotation option in the majors.
More to come…