OAKLAND -- The A's on Thursday optioned one of their promising young starters to Triple-A Nashville.
Right-hander Jharel Cotton, who has struggled to produce consistent results this season, was sent to the Minors on the club's off-day. His departure clears room for lefty Sean Manaea, who is expected to come off the disabled list next week after missing two starts with a shoulder strain.
The A's did not immediately make a corresponding move, though it's expected that catcher Josh Phegley, currently on the seven-day concussion DL, will be activated and take his roster spot Friday in Texas.