Former hitting partner Mike Digby had a chance to hit with some of the biggest names of the game, including Novak Djokovic, Rafael Nadal and Roger Federer. Tennis has a rich history when it comes to the champions of the game but Djokovic, Nadal and Federer are the three players than stand out. Digby, who also works as a tennis coach, explains what makes the Big Three so great. “When you become a top 100 player, top 200 player, everyone can play tennis,” Digby said on The Tennis Files Podcast, per Sportskeeda.”Everyone can hit a forehand, everyon …