Rafa Nadal will have one last chance to face old rival Novak Djokovic before the Spaniard calls time on his illustrious career with the pair set to meet at the Six Kings Slam exhibition event in Saudi Arabia.

Tennis wonderkid Justin Engel has pleaded with Novak Djokovic to avoid retirement for the time being. The German recently followed in the footsteps of Carlos Alcaraz by becoming an extremely young winner on the ATP Tour and he wants to face idol Djokovic before the tennis icon bows out of the sport.

As Rafael Nadal prepares to retire from professional tennis next month, the Spaniard has been asked many times to reflect on the rivalries he's shared with the other two members of the "Big Three"—Roger Federer of Switzerland and Novak Djokovic of Serbia.