After seven retirements, concerning scenes, and some breakthrough runs, the Shanghai Masters comes to an end on Sunday. It's been brutally hot and humid throughout the fortnight, with plenty of players calling the physio mid-match. Defending champion Jannik Sinner could barely walk when he was forced to retire with severe cramps in the third round.

Novak Djokovic threw up on the court twice, while Holger Rune was one of several stars who had his vitals checked mid-match. Rune later urged the ATP to implement a heat rule, and tennis fans also want to see the men's tour take action, even calling for the tournament to be moved to another spot in the calendar.