I picked up Pettitte's rookie, because the lefthander is considered one of the Yankees' all-time greats as part of the Core Four [Derek Jeter, Mariano Rivera, Pettitte and Jorge Posada] - there might be a case to be made for Pettitte to get into the Hall of Fame, even if was a PED guy with one-time pal Roger Clemens.
I've always thought Pettitte was a No. 3 or No. 4 starter who was ultimately more serviceable than dominant for a New York Yankees dynasty through the late 1990s - he was an innings eater, who pitched in important games during the Yankees' postseason runs through October.
On the other hand, while things weren't always in Pettitte's control - he gave up too many hits and his ERA always seemed inflated.