In the best-of-five Davis Cup final, Lopez and Verdasco dropped the first set on Day 2 before fighting back for a 5-7, 7-5, 7-6 (7-5), 6-3 decision over Calleri and Nalbandian.

Spain needs to win just one of Sunday's two reverse singles rubbers to secure its third Davis Cup title this decade. Argentina needs to sweep the Day-3 singles to capture its first-ever Davis Cup championship.

Nalbandian beat Ferrer 6-3, 6-2, 6-3 Friday in the opening singles rubber and Lopez then pulled Spain even with a 4-6, 7-6 (7-2), 7-6 (7-4), 6-3 victory over Juan Martin Del Potro.