Jannik Sinner is no longer a part of the Shanghai Masters, given that he handed his third-round opponent, Tallon Griekspoor , the walkover, because he was cramping. Sinner’s withdrawal, as well as the mid-match retirement of several players, has finally forced the ATP to take some action. The ATP is open to coming up with a heat rule to address the situation.

Italian former player Paolo Bertolucci wants the players to skip some tournaments to focus on recovery. He also censured the hectic 11-month calendar and several rules that can prevent players from making the right decisions.

In these conditions, cramps happen. Nothing strange. I only had them once on court; I was going crazy. Commentating on the match with Griekspoor on TV, I immediately knew he would retire. So many withdrawa

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