Djokovic survives Zverev scare, makes 31st Grand Slam final
Novak Djokovic is still on course for a calendar-year Grand Slam, after beating German Alexander Zverev in five sets 4-6 6-2 6-4 4-6 6-2 in the second U.S. Open semifinals on Friday night.
Apart from having in his sight the historic calendar slam record, the Serb World Number one now ties Roger Federer for 31 Grand Slam finals.
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He meets another familiar foe, Daniil Medvedev in the U.S. Open final on Sunday.