The Phillies officially placed left-hander Cole Hamels on the 15-day disabled list on Thursday, according to ESPN.

Hamels, who is recovering from a left shoulder inflammation, pitched in a minor league game against the Pirates Class A affiliate. He is expected to return from the DL sometime in late April.

"I'm really pleased and really confident, and what I'm able to do now is to truly get spring training in," Hamels said. "Obviously it's a little late, but I feel healthy and I think that's really the key."