Novak Djokovic has collapsed on court at the Shanghai Masters but recovered to beat Jaume Munar.

Brutally hot and humid conditions have taken their toll on a number of players in China this week and, after appearing to vomit during a long previous match, Djokovic was in trouble again during a 6-3 5-7 6-2 win over Spaniard Munar.

After losing a long second set on a gruelling point, Djokovic lay sprawled out behind the baseline before eventually being helped back to his chair by a trainer.

Having already been treated for an apparent left Achilles issue, it appeared Djokovic might not be able to continue, but, after having his vitals checked, the fourth seed roused himself to make it through to the quarter-finals.

The match lasted two hours and 41 minutes with the temperature near 30 degr

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