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. Although the 24th-ranked Briton entered as the underdog,

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.

United Cup is towards its last legs and we have four brilliant teams making it to the semifinals. This article features the first semifinal between Kazakhstan and Poland.

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

Katie Boulter gave world No.2 Iga Swiatek a huge scare before losing a “crazy” encounter at the United Cup. The British No.1 went a break up in the final set of a rollercoaster match - and then had a break point at 4-4 to serve for the biggest win of her career.

In Sydney, Italy earlier won Group D to qualify for the quarterfinals. Winners of the past two Davis Cups and runners-up two years ago to the U.S. in the inaugural edition of the season-opening mixed teams’ event, Italy won its group without world No.1 Jannik Sinner.