Toronto manager John Gibbons volunteered the information to reporters after the game but declined to get into specifics.
"Cecil came up a little bit tender," Gibbons said. "We have to look at that, possibly, what we're going to do there."
Gibbons was pressed for details but instead added: "That's it, that's all you're hearing. That's all you need to know."
Cecil, 29, has appeared in 16 games for the Blue Jays this season and has a 5.23 ERA. He recently returned from the paternity list following a three-game absence to attend the birth of his daughter.
It wasn't immediately clear where Cecil was experiencing discomfort. He has dealt with shoulder issues as recently as last spring, which led to a decrease in velocity at the start of the season. He avoided the DL, but the shoulder has bothered him at various times in his career.
Toronto has fellow lefties Aaron Loup and Franklin Morales on the 15-day DL. Loup began a rehab assignment with Class A Dunedin on Saturday, but he'll need at least a week -- and likely more -- before he can return. If Cecil needs to be replaced on the 25-man roster, switch-pitcher Pat Venditte is a possible candidate.
Gregor Chisholm has covered
the Blue Jays for MLB.com since 2011. Follow him on Twitter @gregorMLB and Facebook, and listen
to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.