Arizona Diamondbacks left-hander Joe Saunders was placed on the 15-day disabled list Saturday with a strained left shoulder.

The move, retroactive to June 17, came one day after Saunders was scratched from his scheduled start against the Cubs after he was unable to get loose in the bullpen.

He said after the game it was "a fluke thing" and thought maybe he had slept on his shoulder wrong. Josh Collmenter and four other pitchers filled in for Saunders in a 6-1 Arizona win.

Saunders, 31, is 4-5 with a 3.44 ERA in 13 starts this season.

The Diamondbacks recalled right-hander Jonathan Albaladejo from Triple-A Reno to take his spot.