Andy Pettitte is a really good pitcher—that much is for sure.
Hall of Fame good? I don't know, but it's definitely worth a look.
I looked at some of Pettitte's current career stats, and I was fairly surprised at the results.
Pettitte is currently second among active leaders for wins with 229. That's 10 more than Pedro Martinez (another potential HOFer). He does have a career ERA of 3.91, a little high for the Hall. He has 2,150 career K's, making him fourth among active leaders.
Pettitte is a two-time All-Star and an ALCS MVP, has had 20-plus wins in two seasons, and has had 14-plus wins in every year of his career but two (his rookie year and his injury-shortened year with the Astros). He has pitched over 200 innings in 10 separate seasons. And of course, he has 18 postseason wins and five World Series rings.
While this is all pretty impressive and proves that he has been an upper echelon pitcher for much of his career, I am still on the fence about him being a Hall of Famer.
If he pitches four more years and averages 14.5 wins per season, he would then tie Bert Blyleven's career wins record. Blyleven is widely considered one of the best pitchers not in the Hall of Fame. With Pettitte's postseason glory added in (especially if he get another ring this year, fingers crossed), he may have a chance without the wins to beat Blyleven.
As far as the four more years go, you never can tell. If he keeps producing and the Yanks keep dishing out the dough, he may pitch until he's 42. He certainly wouldn't be the first to do so.
All in all, I think he has a legitimate shot at the Hall, and that may be what keeps him coming back, so I wish him luck and hope that he doesn't join the likes of almosters like Donny baseball Mattingly and Ron the Gator Guidry.