Iga Swiatek came from a break down in the final set to best Katie Boulter in a three-hour epic to deliver Poland to the semifinals at the United Cup in Sydney.

The British number one had a break point at 4-4 in the deciding set against Poland’s five-time grand slam winner.

Iga Swiatek survived a two-hour and 57-minute thriller against Katie Boulter after completing a 6-7 (3) 6-1 6-4 win at the United Cup to help Poland seal a semifinal ticket at the event.

Poland returned to the semi-finals of the United Cup mixed team tournament for a third successive year after hard-fought singles victories in Sydney handed them an unassailable 2-0 lead over Britain on Thursday.

Katie Boulter fell short of a stunning win over five-time Grand Slam champion Iga Swiatek as Britain's hopes of reaching the United Cup semi-finals are ended by Poland.

Iga Swiatek and Katie Boulter had a couple of animated discussions during and after their three-hour epic at the United Cup, but the Pole wasn't giving anything away.

Iga Swiatek battles through exhaustion to secure a crucial win for Poland at the United Cup, advancing to the semifinals where she’ll face Kazakhstan.

British No 1 Katie Boulter came agonisingly close to a career-defining victory before falling to world No 2 Iga Swiatek in an epic United Cup quarter-final clash in Sydney. The British hopeful pushed the five-time Grand Slam champion to the limit in a thrilling contest that stretched just short of three hours.

Iga Swiatek continued her excellent start to the 2025 season as she defeated Katie Boulter in a thrilling contest to seal Poland’s progress to the United Cup semi-finals. The world No 2 prevailed 6-7(4),