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

No one will be getting an early glimpse at the men’s world No.1 singles player in Flushing this year, nor an 11-time Grand Slam doubles champion.

As was expected, world no. 1 Jannik Sinner will not compete in today's US Open mixed doubles event. The Italian retired against Carlos Alcaraz while trailing 5-0 in Monday's Cincinnati Masters final.

Jannik Sinner’s preparations for the US Open ended in emotional scenes as he retired from the Cincinnati final after just five games and 23 minutes.

It felt like tennis had delivered the perfect script—world No. 1 Jannik Sinner versus world No. 2 Carlos Alcaraz in a Masters 1000 final. Both had torn through the draw in Cincinnati, barely breaking a sweat, setting up the dream clash fans had been waiting for.