NEW YORK -- Adam Warren and D.J. Mitchell briefly passed each other in the Yankees' clubhouse on Saturday morning on their way to and from Triple-A Scranton/Wilkes-Barre, respectively. Warren returns to the farm after lasting only 2 1/3 innings on Friday in his Major League debut, and Mitchell arrives for his second stint in New York to provide some much-needed help to a bullpen that saw plenty of work behind Warren.

Mitchell learned of his promotion while sitting in the stands, charting pitches in last night's game at Rochester, N.Y. Warren's debut was likely already over at that point; he allowed six runs in the Yankees' 14-7 loss to the White Sox.

"We're in a tough spot with the injuries that we've had and the way we've had to use our pitching, and not getting any distance last night; that's just the way it works," said manager Joe Girardi. "As we told [Warren], 'Go continue to improve your stuff. You got that first one out of your way.' A lot of times with that first start, it's a mixed bag. Sometimes you'll get really good; sometimes it can be really difficult. There's not necessarily a determination from your first start how your career is going to go."

Mitchell's big league debut is already out of the way. He appeared twice in a six-day stint with the Yankees in late April and early May, throwing 2 2/3 innings out of the bullpen and allowing one run on four hits.

Mitchell started at Triple-A Scranton/Wilkes-Barre, where he's had an up-and-down season, posting a 5.36 ERA, but he threw seven innings of one-run ball on Tuesday. The right-hander returns to the bullpen, where he spent all of Spring Training in big league camp, as a long reliever for the Yankees.

"Early in the year, I started off really well," Mitchell said. "I kind of hit a bump in the road earlier this month and in late May, but the last start, I kind of figured some things out and started to get back on track, so hopefully I can carry it over to here."

Yanks tab Phelps for Wednesday vs. Rays

NEW YORK -- David Phelps will rejoin the Yankees' starting rotation, getting the start on Wednesday against the Rays in CC Sabathia's spot, which rookie Adam Warren occupied during Friday night's 14-7 loss to the White Sox.

Phelps served as the long man out of the bullpen on Friday, throwing 3 1/3 innings -- one more than Warren -- and 64 pitches. The right-hander allowed two runs and took the loss, but manager Joe Girardi was pleased with the rookie's performance.

Phelps said afterward he did not know if he would be asked to join the rotation, but it seemed the likely option. He has already started twice for New York, allowing two runs in four innings, then no runs in 4 2/3 innings. Phelps needed 85 pitches in his first start and 89 in his second. Girardi said the righty could throw 80-85 pitches on Wednesday.

"He's done a pretty good job for us when we've called upon him to pitch," Girardi said. "The biggest thing was he just wasn't really stretched out. We stretched him out some more, and we'll have to continue to do it."

Bombers bits

• Right-hander Cory Wade was unavailable out of the bullpen on Saturday against the White Sox and would likely remain out on Sunday and potentially Monday against the Rays, Girardi said. Wade threw 58 pitches in 3 1/3 innings on Friday, surpassing his previous season high of 42, which he reached on April 10. Girardi said left-hander Clay Rapada might also be unavailable after pitching three days in a row, but the lefty specialist threw only 14 pitches across two-thirds of an inning in that stretch.

• On this date in 1977, the Yankees set a franchise record with four home runs in one inning to break open an 11-5 win over Toronto. Cliff Johnson went deep twice in the eighth, and Thurman Munson and Lou Piniella each homered once. The Yankees tied the record in a 20-11 win over Tampa Bay on June 21, 2005, again in the eighth inning. Alex Rodriguez, Gary Sheffield, Jorge Posada and Hideki Matsui each went deep in a 13-run frame that helped New York rally from an 11-7 deficit.

• New York Giants head coach Tom Coughlin threw out the ceremonial first pitch before Saturday's game.