Tennis greatest rivals' Rafael Nadal and Novak Djokovic will play against each other in an exhibition match in Chile to give honour to fellow tennis player Nicolas Massu, who recently retired on Sept. 27, 2013.

"We are now in Chile, with David and Nole to pay tribute to #NicolasMassu," Nadal wrote on Facebook along with a picture. "You are huge, Nico," added Nadal.

Massu was thankful to have the two rivals play for him. "I can't believe it," said Massu.

"Nadal and Djokovic will be there to help me bid goodbye on my farewell night," he added. "And someone like Nalbandian, who was ranked third in the world will be there too, I really don't know how to react," Massu said.

The inaugural game will be held at Santiago's Arena Stadium, Massu will play against Nalbandian. Nadal, on the other hand, will face Djokovic in the main event.

Nadal and Djokovic have both received many amazing achievements in tennis. They are both considered as two of the greatest players of all time. Nadal has won 13 Grand Slam singles titles. He currently ranks as World No. 1 right now, before taking it away from Djokovic, who held the spot for a total of 101 weeks. Djokovic has won 6 Grand Slam singles titles.

The rivalry between Nadal and Djokovic is one of the most celebrated rivals in the history of tennis. The two first met during the quarterfinals of the 2006 French Open. They have faced each other for 39 times. The last one was during the finals of the Association of Tennis Professionals (ATP), where Djokovic won. Some of their matches are regarded to be greatest games ever played in the history of tennis, such as the semi-finals in the 2009 Madrid Masters, the finals of 2012 Australian Open, and the semi-finals of the 2013 French Open.

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