Boston Red Sox pitcher Richard Fitts has been diagnosed with a mild right pectoral strain following his exit after five innings against the White Sox. Manager Alex Cora expressed relief, noting the injury was less severe than initially feared, although the timeline for Fitts's return is still uncertain. Tanner Houck is set to start in his place for the series opener against the Rays, while Walker Buehler will take the mound in the subsequent game. Meanwhile, Brayan Bello is on track for a return next week, and Lucas Giolito continues his rehab process. Fitts had an impressive start to the season, boasting a 3.18 ERA over his first three outings.