Christian Harrison
Poland dump the US out to set up United Cup final against Switzerland
Gauff helps Team USA past Greece into United Cup semi-finals, Switzerland advance
US reach United Cup quarters despite Gauff shock as Hurkacz upsets Zverev
Jannik Sinner pulls out of US Open mixed doubles tournament with Katerina Siniakova
Quarter-final exit ends Heliovaara and Patten's French Open dreams