As a single player Smith won 36 tournaments, including the first Masters in 1970, 1971 U.S. Open and 1972 Wimbledon.
In doubles, he celebrated 36 tournament victories with Bob Lutz, with whom he formed a double team since 1967. Among them were four U.S. Open victories, one Australian Open victory and winning the first double Masters in 1973. Overall, Smith won 54 titles in doubles.
He also won seven times with the U.S. Davis Cup.
After his career, he worked as a tennis coach for the U.S. Tennis Association USTA. In Hilton Head Iceland in the state of South Carolina he has with Billy Stearns " Smith Stearns Tennis Academy ". In 2002 he published a book entitled Stan Smith's Winning Doubles.
In 2007 he was inducted into the International Tennis Hall of Fame