Novak Djokovic implored long-time adversary Rafael Nadal to put off his planned retirement after defeating the Spaniard Saturday in what was likely to be the final chapter of their "amazing rivalry".After being presented with a golden tennis racket,

Rafa Nadal thanked Novak Djokovic for making him play beyond his limits as the two great rivals faced off for the final time on Saturday at the Six Kings Slam exhibition event in Saudi Arabia before the Spaniard ends his spectacular career.