Gritty Swiatek leads Poland into United Cup semis

SYDNEY, Jan. 2 (Xinhua) -- World number two Iga Swiatek dug deep to overcome Katie Boulter in a tense three-set women's singles match as Poland reached the semifinals of the mixed teams United Cup after defeating Britain on Thursday.

Poland will now face Kazakhstan on Saturday, with a mouthwatering clash in prospect between Swiatek and 2022 Wimbledon champion Elena Rybakina.

Swiatek sealed Poland's quarte