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04/22/08 7:32 PM ET

Posada returns behind the dish

Expects right shoulder to be tested often by White Sox

CHICAGO -- Jorge Posada returned behind the plate on Tuesday, anticipating that the White Sox will eagerly test his strained right shoulder as soon as they get on the bases.

"They will," Posada said. "I'm happy that [the Yankees training staff] really took the time to make sure everything was fine, and gave me all the time in the world to get back. I appreciate that."

Posada has not started behind the plate since April 8, when the Royals swiped four bags off him and he left the game, complaining that his throwing arm felt "dead."

Posada was on the field early Tuesday afternoon working behind the plate with manager Joe Girardi and zipped a few throws down to second base, reporting improvement. The injury had only affected him while throwing, allowing Posada -- batting .261 with one home run and six RBIs -- to see duty as the designated hitter.

"The arm strength is there and obviously he'll catch tonight," Girardi said. "We'll see how he feels tomorrow and how it responds. To me, tomorrow might even be more important than today."

The Yankees have a dilemma to address, carrying three catchers on their roster. If Posada shows that he can catch on consecutive days, the Yankees are likely to make a move with journeyman Chad Moeller, who is hitting .350 (7-for-20) since joining New York but is out of options.

"Chad has been great for us," Girardi said. "That's something we'll talk about down the road."

Bryan Hoch is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.