Jannik Sinner has withdrawn from the U.S. Open mixed doubles event, where he was going to partner Katerina Siniakova, a day ...

Jannik Sinner, the reigning Australian Open, Wimbledon and U.S. Open champion, looked uncomfortable in sweltering conditions.

Veteran doubles experience overcame singles stardom as defending champions Andrea Vavassori and Sara Errani reached the semifinals at the US Open's reimagined mixed doubles on Tuesday, as the event ...