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Novak Djokovic, the world number one, beat Alexander Zverev in a gruelling five-setter to set up a US Open final against world number two Daniil Medvedev and keep his bid for a calendar Grand Slam on track.
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Djokovic now has the chance to win a record 21st men's Grand Slam singles title but he had to recover from falling a set behind against the fourth seed to eventually win 4-6 6-2 6-4 4-6 6-2.
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If he can beat Medvedev tomorrow at Flushing Meadows then he will move clear of the 20 majors won by Roger Federer and Rafael Nadal.
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History-chasing Djokovic can also become the first man to win all four majors in the same year since Rod Laver in 1969.
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"There's only one match left, all in, let's do it. I'm going to put my heart and my soul and my body and my head into that one," Djokovic said.
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Tough match... Zverev, who at 24 is 10 years Djokovic's junior pushed the world number one all the way.
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Zverev, of Germany, had ended Djokovic's hopes of another slice of history, the 'Golden Slam', by beating him at the Olympics six weeks ago.
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Jelena Djokovic, wife of Novak, reacts after he won at the USTA Billie Jean King National Tennis Center in New York. She will be back there tomorrow to cheer her hubby on as he tries to create history.
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