World No. 1 Aryna Sabalenka advanced to the semifinals of the US Open on Tuesday without having to play a point, after her quarterfinal opponent, Marketa Vondrousova, withdrew due to a knee injury.
Coco Gauff and Lorenzo Musetti both secured spots in the US Open fourth round with commanding wins. Musetti's victory was bittersweet after his close friend Flavio Cobolli retired due to injury.