Claim: Andre Agassi was the number 1 tennis player in the world at one point.
Evidence: Andre Kirk Agassi -LRB- -LSB- ˈɑːndreɪ_ˈæɡəsi -RSB- born April 29 , 1970 -RRB- 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.