What happened: The Athletics activated right-hander Aaron Civale from the 15-day injured list on Wednesday following his recovery from right shoulder tendinitis. In a corresponding move to clear a spot on the active roster, the club optioned right-hander Luis Morales to Triple-A Las Vegas.

Why it matters: Civale's return provides a veteran boost to the rotation as the Athletics remain in the thick of the division race, sitting just 1.5 games behind the Seattle Mariners. Before being sidelined in late May, Civale had established himself as a reliable starter with five wins in 11 outings.

What to watch: Civale is scheduled to start Thursday's series finale against the Pittsburgh Pirates at Sutter Health Park.