Iga Swiatek wrapped up a 2-0 victory for Poland over five-time champions Spain to seal their place in the last eight of the Billie Jean King Cup Finals in Malaga. World number two Swiatek beat Spain's Paula Badosa 6-3 6-7 (6-8) 6-1 in the second singles match.

Ashlyn Krueger and Taylor Townsend saved six match points but ultimately lost the decisive doubles match as the United States was defeated 6-3, 3-6, 10-8 by Slovakia and was eliminated 2-1 in the first round of the Billie Jean King Cup Finals early Friday.

Japan and Slovakia produced stunning comebacks to beat Romania and the United States 2-1, respectively, and reach the quarter-finals of the Billie Jean King Cup on Thursday.