Sinner lasted just five games before retiring from the Cincinnati Open final against Carlos Alcaraz, with just a week to go before the start of the US Open

Jannik Sinner has been forced to withdraw from the mixed doubles competition at the Olympics due to illness, with the US Open on the horizon

It was clear immediately that Jannik Sinner was not himself in Cincinnati.

Carlos Alcaraz won the Cincinnati Open on Monday after Jannik Sinner was forced to retire due to illness. Alcaraz was already up big on Sinner, the World No. 1, when he had to retire. Sinner told the crowd that he hoped to play after feeling bad overnight, but he couldn't make it work.

Spanish star Carlos Alcaraz has his sights set on reclaiming the ATP World No. 1 ranking from Jannik Sinner at the upcoming US Open.

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.