Robert Horry played 16 seasons in the NBA winning seven championships, the most of any player not to have played on the 1960s Boston Celtics. He is one of only two players (the other is John Salley) to have won NBA championships with three different teams: two with the Houston Rockets, three with the Los Angeles Lakers and two with the San Antonio Spurs. He earned the nickname Big Shot Rob because of his clutch shooting in important games, and he is widely considered to be one of the greatest clutch performers in the history of the NBA. Robert Horry has hand signed this San Antonio Spurs 16x20 Photo. Leaf Hologram and Certificate of Authenticity from Athlon Sports.