D-backs RHP Merrill Kelly (shoulder) out at least a month

(Photo credit: Ron Chenoy-USA TODAY Sports)
Arizona Diamondbacks right-hander Merrill Kelly will be sidelined for "a month" or more with a shoulder injury, manager Torey Lovullo confirmed.

Kelly was scratched from his start on Sunday with a teres major strain in his right shoulder and was placed on the 15-day injured list on Tuesday.

Lovullo said two MRI exams confirmed that Kelly will not need surgery, but the team is