NEW YORK -- With Major League rosters expanding to 40 players on Monday, the Yankees will have reinforcements when they report to Comerica Park.

Yankees manager Joe Girardi confirmed that left-handed reliever Phil Coke and catcher Chad Moeller will join the club as it embarks on a 10-game road trip that first takes the Bombers to Detroit to make up a May 11 rainout. Right-hander Joba Chamberlain is also to be activated from the disabled list on Tuesday.

"We're probably going to add a few players, and I think the thing that becomes real important is our bullpen," Girardi said. "We've got guys that have thrown four out of five days, and when you can expand your bullpen, that's a big help. When you can expand a catcher and a pinch-runner, and some players that can help you late in games, that's an advantage for your club."

Chamberlain bounced back well from a 35-pitch live mound session on Saturday at Yankee Stadium. He has been on the disabled list since leaving an Aug. 4 start at Texas with right rotator cuff tendinitis, but threw his full repertoire in working to bench players Brett Gardner and Cody Ransom on Saturday.

Coke, 26, is 2-2 with a 4.67 ERA in 14 games (one start) at Triple-A Scranton/Wilkes-Barre, allowing 19 hits and five walks while striking out 22 in 17 1/3 innings. A 26th-round pick in 2002, Coke started the season at Double-A Trenton, where he was 9-4 with a 2.51 ERA in 23 games (20 starts).

Moeller, 33, made it into 32 games with the Yankees earlier this season while serving mostly as a third catcher, backing up Jorge Posada and Jose Molina. The journeyman batted .227 with one home run and eight RBIs in 75 Major League at-bats, and has a lifetime batting average of .224.

More moves will be coming for the Yankees. Melky Cabrera, who was New York's Opening Day center fielder before being optioned to Triple-A Scranton/Wilkes-Barre on Aug. 15, is also being considered for recall.

Cabrera was sent to the Minor Leagues to work on specific offensive aspects of his game and has performed well, batting .360 (18-for-50) with two doubles and four RBIs in 13 games at Triple-A, though he has been caught in three of four stolen-base attempts.

"He's a candidate, and there's a few more," Girardi said.

Several players on the Triple-A roster have spent time in New York this season and could fit into the September plans. Justin Christian was optioned on Aug. 19 and could return as a pinch-runner, two-fifths of the Opening Day starting rotation is working at Scranton/Wilkes-Barre in Phil Hughes (1-0, 6.94 ERA in five starts) and Ian Kennedy (5-3, 2.35 ERA in 13 games, 12 starts). Hughes is still listed as Scranton/Wilkes-Barre's probable starting pitcher for Monday at Syracuse.

The Yankees had also expressed hope that they could soon recall right-hander David Robertson, who was optioned to Triple-A on AThursday when rookie Alfredo Aceves was added to the Major League roster. Though New York's Triple-A and Double-A clubs are both involved in their respective playoffs, the Yankees have said they will not hesitate to pluck from those rosters if needed at the Major League level.

"We're not going to bring up people necessarily just to sit on the bench," Girardi said. "[We want] people that have earned it and if there is a huge need. Could you bring up five guys in the bullpen? Yeah, but they're probably not going to get the work.

"They would be getting work if they were in Triple-A, and then if you need them, they're fresh. The key is having enough innings to work in and for players to play in. They have to field a team as well, but if people earn it and we feel that they can help us, we'll bring them up."