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.

Japan advanced when Eri Hozumi and Shuko Aoyama defeated Monica Niculescu and Elena-Gabriela Ruse 6-1, 7-5 in the deciding doubles match. Ana Bogdan had put Romania ahead with a 6-2, 6-4 win over Nao Hibino in the first singles match of the day but Ena Shibahara pulled Japan level with a 6-4, 7-6 (2) victory over Jaqueline Cristian.

Shuko Aoyama and Eri Hozumi took Japan into the Billie Jean King Cup quarter-finals for the first time since 2013 on Thursday with a stunning comeback win over Romania. Aoyama and Hozumi defeated Elena-Gabriela Ruse and Monica Niculescu 6-1,

Slovakia reach the last eight of the Billie Jean King Cup Finals with a 2-1 victory over 18-time champions the United States.

Iga Swiatek beat Paula Badosa in three sets and Poland led Spain by an insurmountable 2-0 in the opening round of the Billie Jean King Cup Finals.

World number two Iga Swiatek defeated Paula Badosa 6-3, 6-7 (5/7), 6-1 to take Poland into the Billie Jean King Cup quarter-finals on Friday with a 2-0 victory over hosts Spain. Magda Linette put Poland ahead in the tie with a hard-fought 7-6 (8/6),

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. Viktoria Hruncakova and Tereza Mihalikova had to dig deep to beat Ashlyn Krueger and Taylor Townsend 6-3 3-6 10-8 in the match tie-break of a thrilling doubles that went into the early hours of Friday.

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