Spalding basketball signed by the 2013-14 san antonio spurs. this ball has 15 signatures from the 2013-14 spurs. the ball is signed by the following players: (all signatures have been authenticated by psa/dna) notable signatures include tony parker, manu ginobili, kawhi leonard, and tim duncan. all 15 autographs on this basketball were authenticated by a team of experts at psa/dna and comes with a letter of authenticity so you can rest assured you are purchasing the real deal. don't miss your opportunity to own this rare basketball autographed by the spurs 2013-14 championship team.