It was Nishikori’s first loss in 13 Davis Cup matches, a streak stretching back four years. In Belgrade, Djokovic rallied to beat Mikhail Kukushkin 6-7 (6), 7-6 (3), 4-6, 6-3, 6-2 in a match lasting almost five hours to get Serbia level at 2-2 against Kazakhstan. Elsewhere, John Isner of United States beat Australia’s Bernard Tomic 6-4, 6-4, 5-7, 7-6 (4) to clinch a 3-1 victory on grass at Kooyong.