Jannik Sinner left without US Open partner as Emma Navarro snubs doubles for another event

The revamped US Open mixed doubles event gets underway next Tuesday, and some of the blockbuster pairings have already dropped out. Paula Badosa - who was meant to team up with Jack Draper - withdrew from the tournament altogether due to an ongoing injury.

And the pairing of ATP No. 1 Jannik Sinner and American star Emma Navarro now seem to be out of the game, as organisers of next week's WTA 500 in Monterrey confirmed Navarro would compete in their tournament. It means Sinner, who is still in the Cincinnati Open draw and is through to Saturday's semi-final, no longer has a partner.

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