Andre Agassi won all four Grand Slam tournaments on three different surfaces.
Andre Agassi . In singles tennis , Agassi is an eight-time Grand Slam champion and a 1996 Olympic gold medalist , as well as finishing runner-up in seven other Grand Slam tournaments . Agassi was the first male player to win all four Grand Slam tournaments on three different surfaces ( hard , clay and grass ) , and the last American male to win both the French Open ( in 1999 ) and the Australian Open ( in 2003 ) .