Nishikori brings Japan level

Thiem edges Djokovic while Federer beats Berrettini at ATP Finals

There was little to separate the Davis Cup teams doing battle in World Group action in South America on Friday.

After the opening day of singles rubbers, Japan were level at 1-1 with Colombia, a scoreline shared by the Dominican Republic and Germany, while Croatia are on the verge of drawing level with Brazil.

It was Colombia who took the early advantage in Pereira, with Colombian number one Santiago Giraldo playing on a court named in his honour and downing Japan's Taro Daniel 6-4, 6-3, 3-6, 1-6, 6-4.

World number six Kei Nishikori levelled matters for Japan when he beat Alejandro Falla 7-6 (3), 7-6 (1), 7-5 despite not looking completely comfortable in the match.

In Saturday's doubles rubber, Juan-Sebastian Cabal and Robert Farah will line-up against Yasutaka Uchiyama and Davis Cup rookie Yoshihito Nishioka.

In Brazil, Thomaz Bellucci put the home side 1-0 up by beating world number 499 Mate Delic, who stepped in for Croatian number one Marin Cilic, 6-1, 6-4, 3-6, 6-4.

However, Croatian young gun Borna Coric looks set to restore parity, with the teenager 6-4, 7-6, 4-1 up in his match with João Souza when rain brought a premature close to proceedings in Florianopolis.

It's honours even for Dominican Republic and Germany, after Victor Estrell handed the home side the lead, only for Philipp Kohlschreiber to silence the home fans in Santo Domingo.

Estrell claimed a hard-fought 6-4, 5-7, 7-6 (3), 7-6 (5) victory over Dustin Brown in the day's opening match. Kohlschreiber wasted little time in erasing Germany's deficit, beating Jose Hernandez-Fernandez 6-1, 6-3, 6-1.