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

Four-time Grand Slam winner Jannik Sinner was forced to withdraw from the mixed doubles at Flushing Meadows due to illness, with the US Open singles just around the corner

Sinner withdrew from the Cincinnati final on Aug 18 due to illness. Read more at straitstimes.com. Read more at straitstimes.com.

Jannik Sinner’s recovery from physical and psychological stress was outlined, easing doubts over his US Open participation after the Cincinnati setback.

Iga Swiatek and Carlos Alcaraz underlined their hard court credentials ahead of the US Open with victories over Jasmine Paolini and Jannik Sinner respectively in the women's and men's singles tournaments at the Cincinnati Open.

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.

With the revamped US Open mixed doubles starting on Tuesday, BBC Sport looks at the positives and negatives of the controversial change.

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.