The Athletics have called up prospect pitcher Sonny Gray from Triple-A Sacramento, MLB.com reports. Gray entered the season as the club's fifth-best prospect according to Baseball America.

Gray has not disappointed with Sacramento, as he owns a 2.81 ERA and a 3.2 K/BB over 16 starts (102 1/3 innings). Gray is expected to pitch out of the bullpen at first but could work his way into a starting spot depending on the club's health.