Andy Pettitte gets plenty of questions about whether his buddy Roger Clemens is going to retire, but there's also someone else's career he's pondering: his own. As he prepares for his third season with the Astros, Pettitte is making no promises about the future. He is only 33 years old - Clemens is 43 - but has battled injuries and isn't sure how much longer he wants to worry about his health. "I can't sit here and honestly say I know (if he'll play next year) for sure," Pettitte said yesterday after allowing two runs and five hits to the Bombers in his three-inning spring debut. "It's been two long, hard years here."