D-backs place RHP Zac Gallen (hamstring) on 15-day IL

(Photo credit: Wendell Cruz-USA TODAY Sports)
The Arizona Diamondbacks placed ace right-hander Zac Gallen on the 15-day injured list Friday due to a right hamstring strain.

Arizona recalled right-hander Slade Cecconi from Triple-A Reno in a corresponding move, keeping its 40-man roster at 39 members.

Gallen lasted just six pitches in his Thursday night start against the New York Mets. He said after the game that he hurt