Coco Gauff, Iga Swiatek To Clash For United Cup As Czech Player Makes Abrupt Exit

Coco Gauff and Iga Swiatek will battle for United Cup glory after the USA and Poland won their respective semi-finals on Saturday in Sydney amid bizarre circumstances. Swiatek beat Elena Rybakina to help last year's runners-up Poland see off Kazakhstan and they were joined in Sunday's final of the mixed-teams tournament by the Gauff-led United States. The Americans defeated the Czech Republic, with Gauff beating Karolina Muchova and then an increasingly irate Tomas Machac retiring from his match against Taylor Fritz in an abrupt and bewildering ending. 

"I woke up so late today," said Gauff, 20, after she dismissed Muchova 6-1, 6-4 to underline what a threat she will be at the Australian Open starting next week.

Gauff, the world number three, added: "The whole match I was intense and focused, that made the difference today."

Big-serving Fritz, ranked fourth in the world, lost the first set on a tie break but fought back in the second and looked poised to level up their men's singles match when a hot and bothered Machac shook hands, sending the Americans through.

"Not the way I want to win in the end, but I think we're all happy to be through to the final," said Fritz.

He said that his opponent, who had ranted at the Czech bench and squandered chances to seal the match, told him afterwards he had cramp.

"I didn't expect it to end so abruptly. I did not notice at the time that he was cramping," said Fritz.

'Perfect'

Five-time Grand Slam champion Swiatek played a starring role for Poland in their semi-final against Kazakhstan as she beat Rybakina 7-6 (7/5), 6-4.

"This win makes me really proud," Swiatek said after giving Poland an unassailable 2-0 lead in the tie.

"It is perfect preparation for the Australian Open," said