WORLD No 1 Jannik Sinner suffered an injury setback just hours before the US Open is set to get going.

Sinner suffered an injury setback against Carlos Alcaraz in the Cincinnati Open final while 5-0 down in the opening set.

The Wimbledon champion Sinner is set to team with Katerina Siniakova as part of a new-look mixed doubles tournament.

The new-look tournament is set to get going TODAY, August 19, while the men's singles tournament is set to get rolling on August 24.

Carlos Alcaraz , Emma Raducanu , Taylor Fritz and Venus Williams are all set to feature as part of the tournament.

SunSport can reveal whether or not Jannik Sinner will feature at the US Open.

Is Jannik Sinner playing in the US Open?

It is yet unconfirmed whether or not Jannik Sinner will appear at the US

See Full Page