Andy Pettitte officially announced his retirement Friday, effective at the conclusion of the 2013 season. The 41-year-old will go out with a bang, making his final home start on Sunday and his final start ever next weekend in his hometown of Houston. "I'm announcing my retirement prior to the conclusion of our season because I want all of our fans to know now while I'm still wearing this uniform how grateful I am for their support throughout my career," Pettitte said in a statement. "To have the opportunity to tip my cap during these remaining days and thank them for making my time here with the Yankees so special."