Lendl easily, the first player I ever supported and founded my interest in tennis.
The way he turned the tables on Mac and Connors after those early heartbreaking defeats was just awesome.
Such a shame he couldn't win at SW19, and gave up the chance to win more French Opens in this failed quest.
Djoker reminds me of him in many ways, 4 years at Number 3 before single-handedly ending the Fedal duopoly.