Gauff drags US into United Cup semis as Swiatek also wins

Coco Gauff pulled off double duty to drag defending champions the United States into the United Cup semifinals on Wednesday while world No 2 Iga Swiatek did her bit for Poland.

Fourth-ranked Gauff, who suffered a surprise defeat last time out, put the United States on their way in their quarterfinal against Greece with a 6-3, 6-2 win over former world No 3 Maria Sakkari in Perth.

Clinical 👏

Coco Gauff puts USA ahead early in the Quarterfinals, defeating Maria Sakkari in straight sets 6-3, 6-2 pic.twitter.com/zUkfJpSqZp

Stefanos Tsitsipas brought Greece level by defeating struggling Taylor Fritz 6-4, 7-5.

In the deciding mixed doubles, Gauff teamed up with Christian Harrison to battle past Tsitsipas and Sakkari 4-6, 6-4, 10-8.

The defending champions book their ticket back to Sydney! pic.twitter.com/lC7cybangS — United Cup (@UnitedCupTennis) January 7, 2026

The 21-year-old Gauff struggled with her serve as she suffered her first-ever defeat at the United Cup on Monday when she was stunned by Spain's Jessica Bouzas Maneiro.

"Definitely a much better match today," Gauff said after making light work of Sakkari.

"Last match, I just tried to erase it. That's the beauty of this tournament.

"So definitely happy to give my team the lead today."

Six-time Grand Slam champion Swiatek beat 97th-ranked Suzan Lamens 6-3, 6-2 in the tie against the Netherlands in Sydney.

Iga makes it 2 from 2 for Poland 🇵🇱 pic.twitter.com/h0eeMMT8TY — United Cup (@UnitedCupTennis) January 7, 2026

Hubert Hurkacz, on his way back after being out for seven months following knee surgery, defeated Tallon Griekspoor 6-3, 7-6 (7/4) as Poland sealed their last-eight spot.

Poland will play hosts Australia, with the winner facing the United States for a place in Sunday's final.

The mixed-team United Cup features 18 teams and serves as build-up towards the Australian Open, which starts on January 18.