Marta Kostyuk delivered a statement of Ukrainian intent as victory over Spain’s Jessica Bouzas Maneiro propelled her history-chasing nation to the brink of a first Billie Jean King Cup by Gainbridge semi-final

The World No. 20 has been sidelined by injury leading up to the Finals

Kazakhstan face 18-time winners the USA for a place in the semi-finals

The seven ties at the World Cup of Tennis will be broadcast to fans around the globe

Watch Billie Jean King in Episode 1 of 'On Her Shoulders' presented by e.l.f. – our new in-depth interview series with incredible women who make up the past, present and future of the Billie Jean King Cup by Gainbridge