Matt Moore will have an MRI on his left elbow after departing Monday night's game against the Kansas City Royals in the fifth inning.

Moore grimaced after throwing a changeup to Nori Aoki, which prompted a mound visit from Joe Maddon and Tampa Bay Rays athletic trainer Ron Porterfield.

"Ron's take on it was that it was something less than last year," Maddon said. "But we still have to get it checked out."

Moore said he would have a MRI on Tuesday. X-rays taken Monday night showed no damage.

"Maybe it's a hyperextension, it's kind of like a bruise," Moore said. "It's hard to find that uncomfortable feeling."

Moore won 17 games last season, but went on the disabled list last July 31 with a sore elbow and did not return until Sept. 3.