Jorge Posada squatting behind the plate would have made for a Core Four reunion last night at George M. Steinbrenner Field.

Derek Jeter started his first game at shortstop since being carried out of Yankee Stadium with a fractured left ankle on Oct. 13.

Andy Pettitte made his spring debut and Mariano Rivera hurled a perfect frame in a second exhibition appearance.

While it did very little to alleviate the fact Alex Rodriguez, Mark Teixeira, Curtis Granderson and possibly Phil Hughes won’t be available Opening Day, the presence of Jeter, Pettitte and Rivera was welcome.

Even though Jeter handled one ground ball in four frames and went 0-for-3 and walked in a 6-2 Yankees victory over the Phillies, the night served him well.

Pettitte admitted his command needs to improve, but in three innings he allowed a run and four hits.