Okay, I know the GOAT threads get annoying, but hear me out (this idea originally came from PimpMyGame, from another thread about Borg's wood comeback): Wayne Ferreira is the greatest tennis player that ever lived. Wait, don't go! Listen! Over his career, Wild Wayne defeated the three players most commonly marked as "GOAT": Bjorn Borg Pete Sampras Roger Federer Granted, this is a stretch, but I'm totally (not) serious. C'mon, whaddaya say?