The No. 1-ranked Sinner, the defending champion in singles at Flushing Meadows, was supposed to compete in mixed doubles with Katerina Siniakova.

Jannik Sinner has withdrawn from the U.S. Open mixed doubles, which begins Aug. 19 in New York. The men’s world No. 1 in singles retired after five games of his Cincinnati Open final against Carlos Alcaraz due to illness, and will recover before preparing for the U.S. Open singles.

Jannik Sinner has withdrawn from the US Open mixed doubles event after retiring from the Cincinnati Open due to illness. Danielle Collins and Christian Harrison will replace Sinner and Katerina Siniakova in the draw.