Veronika Kudermetova and Liudmila Samsonova propelled a Russian tennis squad into their first Billie Jean King Cup final since 2015 as they sealed a 2-1 victory over the United States.

The Russians will meet Switzerland in the trophy showdown on Saturday, after Olympic champion Belinda Bencic defeated Ajla Tomljanovic to secure an unassailable 2-0 lead for the Swiss over Australia.

While Switzerland did not need a doubles decider, the Russian team, who are competing this week as Russian Tennis Federation, did.

Samsonova, who clinched her maiden singles title on the WTA Tour earlier this year, put them ahead in their tie against the USA, downing 2017 US Open champion Sloane Stephens 1-6 6-4 6-3.

Yet the USA hit back through Danielle Collins, who defeated Anastasia Pavlyuchenkova 6-7 (9-11) 7-6 (7-2) 6-2 – a contest that lasted two hours and 42 minutes in Prague.

Momentum was with the 18-time champions, but the Russians recovered in the doubles, with Samsonova and Kudermetova ultimately having little trouble in seeing off Shelby Rogers and Coco Vandeweghe 6-3 6-3.

Bencic saw off Tomljanovic to confirm Switzerland's place in the final, with Jil Teichmann having earlier overcome Storm Sanders 6-0 6-3.

Russia dominated this event, previously known as the Fed Cup, in the mid to late 2000s, winning four out of five editions from 2004 to 2008, but they have not triumphed since. Switzerland recorded their best result when a team featuring Martina Hingis finished second to Spain, way back in 1998.