Great Britain are closing in on a place in the Billie Jean King Cup final for the first time since 1981 after Emma Raducanu put them ahead against Slovakia.
British number two Raducanu continued her winning streak, having not dropped a set in her three matches at the women's team event, with a 6-4 6-4 victory over Viktoria Hruncakova.
It means Katie Boulter, Britain's leading singles player, can secure her nation's place in Wednesday's final by beating Slovakian number one Rebecca Sramkova later on Tuesday.
If Boulter loses, the best-of-three tie will go to a deciding doubles match.