"It's not good, that's for sure," Yankees starter Andy Pettitte said. "Go into Boston and get swept, then lose the first game here. We're playing terrible and it's not good. It's a bad time to be doing that."
With the season winding down, Girardi is aware his team has almost no margin for error.
"We're getting to where we can't lose much more," Girardi said.
Dickey (13-12) allowed four hits, walked two and struck out eight. The knuckleballer retired the final 11 batters he faced and 15 of the last 16.
"Probably the best we've seen him this year," Blue Jays manager John Gibbons said.
Dickey said he didn't get discouraged after allowing five baserunners in the first two innings because he knew how much his pitch was moving.
"Even in the first two innings I knew I had a pretty good one," Dickey said. "I just needed to stay the course with it."
Dickey has not lost since the Yankees beat him in the Bronx on Aug. 21. He's 4-0 with a 2.73 ERA in five starts since.
"When he's got the good one going and he's throwing it for strikes, he's as tough as anybody out there," Yankees catcher Chris Stewart said.
"It was dancing all over the place," Granderson said of Dickey's knuckler. "That's the one thing with a knuckleballer, if you can get the right grip and get the right arm velocity and speed on it, you can make it do some crazy things. He was able to do that tonight."
Alex Rodriguez returned to New York's lineup after leaving Sunday's loss at Boston in the fifth inning with a strained right calf. He's also dealing with a sore left hamstring suffered in last Tuesday's win at Baltimore. Rodriguez started as the DH, batting second. He finished 0 for 4 and struck out looking twice.
Girardi said Rodriguez came through the game "OK."
"He never said anything," Girardi said.
Rasmus hammered a one-out blast into the second deck off Pettitte in the fourth, his 21st of the season and third in three games.
Rasmus, who sat out Sunday's loss to Baltimore with general soreness, has connected every game since being activated off the 15-day disabled list Friday. He had been out since Aug. 11 with a strained muscle in his left side.
Pettitte (10-10) came in 3-0 with a 1.77 ERA against the Blue Jays this season but couldn't extend his run of dominance against the AL East's last-place team. He allowed one run and six hits in 6 2/3 innings, walked two and struck out five.
"Andy held them down, we just weren't able to do anything," Girardi said.
Davis greeted reliever Shawn Kelley by homering into the second deck on the right-hander's second pitch. For Davis, the home run was his sixth.
Toronto was eliminated from wild-card contention when Texas won at Tampa Bay. ... Blue Jays 1B Edwin Encarnacion (left wrist) and LHP Brett Cecil (left elbow) will miss the remainder of the season. Encarnacion is scheduled to undergo surgery. ... Yankees LHP Boone Logan has been diagnosed with bone spurs in his elbow, but will try to pitch through the pain. ... New York C Austin Romine (concussion) was scratched from the starting lineup and replaced by Stewart. ... Janssen celebrated his 32nd birthday.
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TORONTO, CANADA - SEPTEMBER 17: Curtis Granderson #14 of the New York Yankees catches a fly ball in the first...