The eagerly-awaited semi-final was halted just after 11pm (2200GMT) under a curfew agreement with Djokovic leading Nadal 6-4, 3-6, 7-6 (11/9).
The epic battle between Kevin Anderson John Isner lasted for 6 hours and 35 minutes with final score reading 7-6, 6-7, 6-7, 6-4, 26-24 in Anderson's favor.
John Isner came back from a set down to beat Alexander Zverev in two hours and 29 minutes.
John Isner blasted down 13 aces and took just one hour and 23 minutes to floor Juan Martin del Potro and book his place in Sunday's final.
The 18-time Grand Slam champion and the billionaire Microsoft co-founder will pair up in a one-set exhibition match in Seattle on April 29 to support children's education in Africa.
This is Andy Murray's fourth title in succession after wins in Beijing, Shanghai and Vienna and his 14th career Masters 1000 triumph
John Isner entered the semi-finals of Paris Masters with a 7-6 (8/6), 4-6, 6-4 win over compatriot Jack Sock
Jack Sock knocks out top-seed John Isner, to face Juan Monaco in final of ATP Houston open.
John Isner set up a quarter-final with compatriot Jack Sock after he entered the quarter-finals of the ATP Houston Open.
John Isner delivered a 6-4, 6-4, 5-7, 7-6 (7/4) victory over Australia's Bernard Tomic in two hours 15 minutes in the fourth rubber to help United States clinch the tie with an unassailable 3-1 lead.
David Ferrer beat John Isner 6-4, 6-4, 7-5 in two hours, four minutes in the Australian Open pre-quarters at the Hisense Arena to set up his sixth appearance in the last eight.
John Isner won 6-3, 7-6 (8/6), 7-6 (7/2) in two hours 20 minutes on Hisense Arena to book his place in the third round of the Australian Open.
Isner won 7-6 (7/3), 3-6, 7-6 (7/5) for just his second career win over the Swiss legend.
Novak Djokovic, twice a champion in Shanghai, eased to a 6-2, 6-3 victory past Spaniard Feliciano Lopez to stay on track for a ninth title of the year.
John Isner, the last American man remaining in the draw, came out with a right-minded, aggressive game plan and plenty of positive energy. But despite all of Isner's best efforts, he could not find a way to win a set against Roger Federer.
While second seed Roger Federer defeated American 13th seed John Isner, French 12th seed Richard Gasquet eliminated sixth seed Tomas Berdych.
Caroline Wozniacki crashed John Isner's post-match conference but both were in good spirits owing to wins in their respective US Open 2015 matches.
The 25-year-old Kei Nishikori defeated American John Isner 4-6, 6-4, 6-4 to capture his 10th career title at the combined ATP and WTA hardcourt event, a warm-up for the US Open fortnight that starts in three weeks.