Colon wound up surrendering eight runs (three earned) on six hits and two walks, while throwing 42 pitches and getting just two outs on Thursday.
The first inning saw the Blue Jays get two infield hits on swinging bunts, Eduardo Nunez make an error on a potential third out, Brett Gardner misplay a line drive that went for a double, and Colon labor a bit after beating a runner to first base.
Colon threw six shutout innings against the Mets in his first start after missing time with a strained left hamstring, then gave up five runs on 10 hits and four walks in 5 2/3 innings against the Rays before his rough outing at Rogers Centre.
After that game -- a 16-7 loss for the Yankees that catcher Russell Martin felt could've been helped by sign stealing -- Colon said he feels fine, but is playing in fear of re-injuring his left leg.
"I think he just needs to get it out of his head," Girardi said. "Because he tells me he's not feeling anything, so if he's not feeling anything, he's got to put what happened behind him and just go out and pitch and cover the base normally."
While poring over frame-by-frame tape, Girardi was mainly looking at how high Colon was lifting his leg and how he was landing. He felt those two things were on par with how they were earlier in the year.
Colon's velocity was a few ticks lower, though.
He can normally get his four-seam fastball in the mid-90s, but it was sitting more in the 92- or 93-mph range on Thursday, with his two-seamer -- which is normally in the low 90s -- frequently being in the upper 80s, according to Pitch-f/x.
Girardi said that could've been a byproduct of the All-Star break.
"He didn't throw as bad as I thought," Girardi said. "I thought he threw the ball well, and there was movement. But there was an error, plays we don't make that we usually make, infield hits. Those don't bode well."