"When they decided to pitch me less and rest me up, that took a little out of me, and that's why I don't have the same control," Peralta said. "I wasn't pitching as consistently. I believe that has something to do with it."
Peralta entered the eighth inning Friday with a one-run lead but allowed the Blue Jays to tie the game on a single by Brett Lawrie and walk of Josh Thole.
Manager Joe Maddon said he would like Peralta's innings to be "more expedient" but disagreed with the notion that the time off took Peralta out of his routine.
"I just think he's been off a little bit," Maddon said. "I feel very certain he's going to be fine moving forward. I have that much faith in the guy."
Sam Strong is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.