Alvarez was able to throw Wednesday after having an MRI to figure out the root of his recent shoulder pains, John Hickey of the Bay Area News Group reports.
The results of his MRI have yet to be revealed, but seeing him throw shows that Alvarez is headed in the right direction. Alvarez had a stellar 2014 season in which he had a 2.65 ERA, but only threw four games in 2015 before incurring his shoulder injury. He'd thrown 22.2 innings this season at Triple-A Nashville prior to this setback.