<P> Robert Keith Horry ( / ˈɒri / ; born August 25 , 1970 ) is an American retired basketball player and current sports commentator . He played 16 seasons in the National Basketball Association ( 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 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 Bob or Rob because of his clutch shooting in important games ; he is widely considered to be one of the greatest clutch performers and winners in NBA history . Horry now works as a commentator on Spectrum SportsNet . </P>
who did robert horry won his championships with
the Houston Rockets the Los Angeles Lakers the San Antonio Spurs