The extraordinary thing about Sramkova is that, like the 1950s British champion Christine Truman, she was born with only one functioning eye. Yet that did not stop her from extending her record at these finals to three singles wins from three, as she came back from an early deficit to overcome Katie Boulter 2-6, 6-4, 6-4.

Watch the best shots as Great Britain's Katie Boulter loses 6-2 4-6 4-6 to Slovakia's Rebecca Sramkova to level up their BJK Cup semi-final.

Slovakia has followed up its win over the United States with a 2-0 victory over Australia to reach the semifinals of the Billie Jean King Cup finals.