Djokovic four wins from calendar Grand Slam and 21st major
Novak Djokovic moved four wins away from a calendar Grand Slam and 21st major thanks to a 17th straight win over Kei Nishikori at the US Open.
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Novak Djokovic moved four wins away from a calendar Grand Slam and 21st major thanks to a 17th straight win over Kei Nishikori at the US Open.
