Andy Pettitte a member of the Yankees Core 4, is one of the most beloved and reliable players in franchise history. A 2-Time All-Star and 5-Time World Series Champion Pettitte has played nearly his entire career with the Yankees. He is the all-time leader in Postseason victories with 18 and is looking to add to that impressive total as the Yankees make yet another World Series run. There is no one Yankees fans trust more in a big spot than Pettitte. Andy Pettitte personally hand-signed and inscribed this MLB Baseball. This baseball is Guaranteed Authentic and includes a Steiner Sports Certificate of Authenticity and accompanying tamper-evident Hologram. This MLB Baseball also comes with a hologram of MLB authentication. The Steiner Seal Means It's Real. Steiner Sports is the Official Memorabilia Provider of the New York Yankees.