Rafael Nadal and Roger Federer have one of sports biggest and best rivalries. The two have played each other numerous times, winning, losing, and everything in between. Following Federer’s retirement from the sport, Nadal took to Instagram to share a sweet message of comeraderie. RELATED: Roger Federer has announced his retirement from tennis; will play professionally one last time at the Laver Cup Rafael Nadal pulls out of Wimbledon, Nick Kygrios sends him a supportive message View this post on Instagram A post shared by Rafa Nadal (@rafaelnadal) The post features photos of Nadal and . . .