John McEnroe
John McEnroe’s professional tennis career started 1978 until he retired in 1992! McEnroe has racked in over 12 million dollars in prize money – which is not surprising considering he’s won 71 career titles, 7 Grand Slam Singles Titles (3 Wimbledon and 4 US Open). He would go on to be inducted into the Tennis Hall of Fame in 1999. McEnroe is a legend who worked hard to get to this level of success, and all of this was achieved without the ‘help’ of enhancing drugs. Raw and pure talent alone.
Mats Wilander
Say hello to the Swedish former World No. 1 who from 1982 to 1988, won seven Grand Slam singles titles (three at the French Open, three at the Australian Open, and one at the US Open), and one Grand Slam men’s doubles title (at Wimbledon). He and Rafael Nadal are actually the only men in tennis history to have won at least two Grand Slam singles titles on each of the three surfaces.