World number one Carlos Alcaraz sealed Spain's berth in the Davis Cup quarter-finals on Sunday by beating South Korea's Kwon Soon-woo in straight sets.
US Open champion Alcaraz won 6-4, 7-6 (7/1) against his 74th-ranked opponent at home in Valencia after Roberto Bautista Agut had earlier beaten Hong Seong-Chan 6-1, 6-3.
After their surprise 2-1 loss to Canada on Friday, in which Alcaraz lost to Canadian Felix Auger-Aliassime, the Spaniards won in the singles against South Korea.