Jannik Sinner retired for cramps from the Shanghai tournament, of which he was outgoing champion. After two sets, the first won the second lost, against Griekspoor, the number two in the world suffered from muscle problems with both legs, which strongly reduced their mobility to limp. The intervention of the physiotherapist did not serve: the South Tennist South Tyrolers had to give up and came out of the field among the applause supported by his collaborators.
The blue had won the first set for 7-6 (3). Then in the second fraction he arrived two points from the match, before surrendering for 7-5. Finally, in the third fraction he began to accuse problems, especially for the right leg cramps. So, on 3-2 in favor of the Dutchman, he was forced to raise the white flag. At the eighth then Tallon Griekspoor, 31 of the ATP ranking and 27th force of the scoreboard.