Miguel

Castro

Castro will miss the remainder of the 2025 season with a torn patellar tendon, so this is just a procedural move that clears a 40-man roster spot for Ryan Cusick after Cusick was claimed off waivers.

Castro is out for the year after slipping on first base while retiring Juan Soto on Wednesday.

No word yet on the specific diagnosis, but the 30-year-old hurler will undergo surgery and will miss the remainder of the 2025 campaign. He suffered the injury while covering first base during Wednesday’s battle against the Mets. He finishes the season with a 7.50 ERA, 1.67 WHIP and a 4/5 K/BB ratio over six innings in six appearances with the White Sox.

Castro needed assistance to leave the field with members of the training staff after slipping while covering first base. There should be an update on his status at some point soon, but it wouldn’t be surprising if he required a trip to the injured list.

Castro was acquired from the Astros yesterday after posting a 2.29 ERA in 19 2/3 innings out of the pen at Triple-A Sugar Land. The 10-year major league veteran will be a candidate to handle late leads for the White Sox.

The 30-year-old right-hander had an opt-out clause coming up in his minor league deal, so the Astros decided to flip him someplace where he’ll get an opportunity. He’s expected to join the White Sox’ bullpen on Friday.

Astros manager Joe Espada said Saturday that Luis Guillorme and Miguel Castro have been told they won’t make Houston’s season-opening roster, but they’re presumably sticking around at Triple-A Sugar Land. It’s undoubtedly a positive development for both Brendan Rodgers and top prospect Cam Smith that two likely bench options aren’t making the club’s Opening Day roster.

Castro will compete in spring training for a spot in Houston’s season-opening bullpen after being cut loose back in August by the Diamondbacks after missing most of last year due to shoulder inflammation. The 30-year-old righty made 75 relief appearances the previous season for Arizona. He holds a serviceable 4.20 ERA, 1.38 WHIP and 410/233 K/BB ratio across 460 2/3 innings (419 appearances) in the big leagues dating back to 2015. He’ll presumably operate in middle relief for the Astros if he gets back to the majors.

Castro went unclaimed on waivers after being designated for assignment earlier this week at the trade deadline. The 29-year-old righty, who missed time earlier this year due to a shoulder injury, figures to generate some interest on the open market after making 75 relief appearances last year for Arizona.

Castro was a key component of Arizona’s relief mix last year, but missed nearly three months due to shoulder inflammation and now loses his roster spot to veteran Dylan Floro.