Rafael Nadal isn't denying the claim that he could have won more Grand Slams had he stayed healthier throughout his career but insists that he is happy with his success and that finishing behind Novak Djokovic in the Grand Slam race isn't making him any less happy with his achievements.

Rafael Nadal is preparing to say one last goodbye to tennis during the upcoming Davis Cup finals. Reflecting on his career, the Spaniard made clear who was his biggest rival between Roger Federer and Novak Djokovic.

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.