Blue Jays manager John Gibbons confirmed that Cecil had been checked out, but declined to get into specifics beyond saying it was sore.
"His shoulder's a little tender," Gibbons said. "We don't think it's a big deal, but no use pushing it right now."
Cecil's never had to miss time in his Major League career because of a shoulder issue. He technically missed four games in August 2013 because of shoulder inflammation, but in the end that was more tied to left elbow inflammation that eventually ended his season a couple of weeks later.
The 28-year-old Cecil is competing for the closer's role alongside right-hander Aaron Sanchez. Cecil was one of the club's most valuable relievers last season as he posted a 2.70 ERA in 53 1/3 innings.
is a reporter for MLB.com. Read his blog, North of the
Border, and follow him on Twitter @gregorMLB. This story was not subject to the approval of Major League Baseball or its clubs.