MLB.com notes that Pettitte passed his physical, making him officially a Yankee once again.

Pettitte was re-introduced by the Yankees on Thursday afternoon in a conference call, kicking off his second tour of duty with the Bronx Bombers.

The team announced Pettitte's return via a conference call rather than with a Yankee Stadium press conference, as the left-hander had to fly back to Houston on Wednesday for a family holiday commitment.