Novak Djokovic collapsed on court during his match at the Shanghai Masters but recovered to defeat Jaume Munar.
The Serbian player won 6-3 5-7 6-2 despite struggling with brutally hot and humid conditions and an apparent left Achilles issue.
After losing the second set, Djokovic lay sprawled behind the baseline and required medical attention before continuing the match.
His victory secured his place in the quarter-finals, making him the oldest man at 38 to reach the last eight of an ATP Masters 1000 event.
Djokovic will now face Zizou Bergs in the quarter-finals, with other top players like Jannik Sinner also struggling with the conditions.
