Premise: Andre Kirk Agassi ( [ ˈɑːndreɪ_ˈæɡəsi ] born April 29 , 1970 ) is an American retired professional tennis player and former World No. 1 who was one of the sport 's most dominant players from the early 1990s to the mid-2000s . Generally considered by critics and fellow players to be one of the greatest tennis players of all time , Agassi has been called the greatest service returner in the history of the game . 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 ) . He also won 17 ATP Masters Series titles and was part of the winning Davis Cup teams in 1990 , 1992 and 1995 .
Hypothesis: Andre Agassi is a golfer.
Label: CONTRADICTION