Nadal and Djokovic have faced each other 51 times in total with the Serbian shading it with 26 wins but the Spaniard has won their last two meetings.
There's no doubt Djokovic will be the fresher of the two when they meet on Friday, after Del Potro took a lot out of Nadal.
While Nadal hasn't really been off the scene at all, Djokovic is ending a string of five straight majors in which he didn't play a semifinal match - his longest such stretch since 2006.
"There is no one other match in the history of tennis that played more than our match". The set stayed on serve until Del Potro secured the first break point for a 4-3 lead.
The victor will play either John Isner or Kevin Anderson in Sunday's final. He is one of the more complex players that I have ever seen in our sport, it is always a big test.More news: ‘Totally unacceptable’: Beijing vows retaliation if United States taxes $200bn of Chinese goods
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Nadal and Djokovic will battle for Sunday's final on the same court at 4pm.
Overall, it's been incredibly close between these two over the years, as Djokovic owns a 26-25 head-to-head record. Sure they met in Rome this year, and Madrid the last, but it has been three years since they met in a Grand Slam, and seven since they faced off at Wimbledon. He seems to have returned to form, as he has been excellent at Wimbledon.
"We always played in important stages, important places", said Nadal, who had a far rougher go of things in the quarterfinals than Djokovic, needing more than 4½ hours to edge Juan Martin del Potro in a five-set thriller.
Nadal won his ninth French Open championship and fifth in a row. The final score line read 7-5, 6-7, 4-6, 6-4, 6-4 in favor of the 17-time Grand Slam champion.
"I'm sorry for him", Nadal said in the press conference. Both players hold well over 90% of the time on grass, as well as being below-average returners, and tiebreaks are again likely. In the United States, the match is scheduled to start after the John Isner vs Kevin Anderson match and will be broadcast on ESPN. This was Nadal's 14th Grand Slam, tying him at second with Pete Sampras and only behind Roger Federer.
"I think after each win throughout these 10 days, I've had a Kit Kat. I felt like I did some good business here in the past already", he said.