Pettitte, 39, last played in the Major Leagues in 2010, when he went 11-3 and was an All-Star. He has 240-138 lifetime record with the Yankees and Houston Astros. Pettitte ended a one-season retirement by agreeing to a minor league contract on March 16.
Pettitte last pitched for the Thunder on a rehab assignment in the 2010 Eastern League playoffs against New Hampshire (Game 2 of ELDS) and Altoona (Game 1 of ELCS at Altoona). Because Pettitte is coming out of retirement on a Minor League contract, he is technically a minor league player and not considered a Major League Rehabilitation Assignment (rehab). Pettitte will count against Trenton's 25 man active roster.
Pettitte is a member of what is known in New York as "The Core Four" - a moniker given to Pettitte, Mariano Rivera, Derek Jeter and Jorge Posada, who were with the Yankees for each of the team's five World Series Championships since 1996.