Mark Buehrle's last start ended in a loss, marking the first time this season that the Blue Jays' left-hander lost two straight games.
Buehrle (10-3) takes the mound against the Yankees on Wednesday in an attempt to get back on track and secure his 11th win of 2014. But he'll be up against a club that has dominated the veteran pitcher like no other team over his 15-year career.
Buehrle is 1-10 lifetime in 16 starts against the Yankees, and his 6.02 ERA against New York is higher than any other opponent he's faced.
He was 0-4 against the Yankees last season, giving up 18 runs and five homers.
Buehrle has enjoyed a stellar beginning to this season, and he was the first Major League pitcher to reach 10 wins. But he now finds himself in a little funk. He allowed four runs on eight hits in 6 1/3 innings last time out against Baltimore in a 4-2 loss.
"There were times I made a lot of mistakes, and they made me pay for them," Buehrle said, "and then I made a few good pitches, and they put the ball in play and got some base hits."
Opposing Buehrle will be Chase Whitley, who has continued to improve to secure his spot in the Yankees' rotation. He's coming off his best outing of the season last Thursday in Seattle, when he went a career-high 7 2/3 innings, allowing just two runs and five hits to the Mariners, pushing him to 2-0 in six starts.
"I'm just going out and competing, and pitching the game that I've been pitching since I've been able to pitch at an early age," said Whitley.
Whitley has recorded at least five innings and allowed five hits or fewer and no walks in each of his last three starts. He hasn't walked a batter in his last four starts, marking the longest active streak in the Majors.
The rookie has progressively pitched deeper into games with each start, and manager Joe Girardi knows that working on Whitley's endurance takes time.
"This is a guy that's really never thrown anything more than 95 innings in a season, because he's been a reliever most of the time," said Girardi. "But he's kept his pitch count down. He's been aggressive and uses his stuff well."
Yankees: CC gets on mound, takes next step in rehab
CC Sabathia threw off a mound Monday for the first time since May 10, when he pitched against the Brewers and was quickly shuttled to the 15-day disabled list.
Sabathia threw a bullpen session of just fastballs and changeups, the next step in his rehab from a right knee stem-cell injection. Girardi still doesn't have a specific date for Sabathia's return.
"We don't really have a time frame yet," said Girardi. "He'll throw another bullpen [session Wednesday], and then we'll just continue to increase the amount of pitches and the pitches that he throws. I think he's going to mix in some other pitches [Wednesday], and mix in a slider as well."
Blue Jays: Delabar optioned
The Blue Jays on Tuesday optioned right-hander Steve Delabar to Triple-A Buffalo, and they recalled infielder Munenori Kawasaki.
Delabar found himself slowly sliding down the Blue Jays' depth chart as he battled a slight drop in velocity and a lack of command this season. Overall, the former All-Star posted a 4.68 ERA with 16 walks in 25 innings and began to lose his innings to fellow right-handers Chad Jenkins and Dustin McGowan.
Delabar was an All-Star last season, when he pitched to a 5-5 record and a 3.22 ERA. The 30-year-old right-hander has a career record of 15-9, with a 3.68 ERA in 151 big league appearances.
• Center fielder Colby Rasmus will make his return to the Blue Jays' lineup on Wednesday. Rasmus hasn't played since he suffered a strained right hamstring during a game against the Angels on May 12. Anthony Gose was optioned to Triple-A following Tuesday night's game to make room for Rasmus.
• Yankees center fielder Jacoby Ellsbury had his 17-game hitting streak snapped in Saturday's loss in Oakland, marking the end of the longest active streak in the Majors at the time.
Jamie Ross is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.