Luis Severino: Everything you need to know

The Athletics announced Tuesday that Severino has been diagnosed with a strain of his right shoulder capsule and subscapularis muscle and will be re-evaluated in 4-to-6 weeks, Martin Gallegos of MLB.com reports. Severino sustained the injury during his most recent start Friday against the Yankees and was placed on the 15-day injured list a day later. The right-hander underwent an MRI on Monday that confirmed the severity of the shoulder strain, which he'll treat with a platelet-rich plasma injection Thursday. Severino will wait for the shot to take effect before he begins the rehab process, and since he's not expected to start ramping up his throwing until he gets re-evaluated at the beginning of July, the 32-year-old would appear unlikely to return from the IL before the All-Star break.

The Athletics placed Severino on the 15-day injured list Saturday with a right shoulder strain. Severino made an early exit from Friday's game due to what was originally labeled as arm soreness, but further evaluation determined the right-hander suffered a strain in his shoulder. The severity of his strain is unclear, but he'll now have to wait until at least mid-June for his next opportunity on a big-league mound. Michael Kelly will come up from Triple-A Las Vegas in a corresponding move to give the A's extra bullpen depth until they need another starter.

Severino was removed from Friday's game against the Yankees with right arm soreness, Martin Gallegos of MLB.com reports. Severino gave up four unearned runs and struck out a batter during his lone inning of work before his arm forced him to leave his start prematurely. The A's will presumably send him in for imaging to determine whether a structural issue is causing his soreness, and more details on his injury could come out in the near future.