In Shanghai, Sinner defeats Medvedev easily in straight sets, 6-1 6-4. Nothing too intricate tactically, Jannik is now content to play baseline tennis against Daniil and beat him at his own game.
Machac upset Carlos in straight sets 7-6 7-5 with Carlos playing really well, especially in the first set. Machac was hitting forehands on average about twelve miles per hour faster (134 km/h to 114 km/h) than Alcaraz. I wouldn't have thought that was possible but Tomas is one gnarly tennis player to contend with.
Sorry to hear about Rafa, but a little relieved, too. He's asked way too much of his body already.