A Novak Djokovic-led Serbia surprisingly fell behind 2-1 at home to Kazakhstan in the Davis Cup first round after he lost in doubles on Saturday.
Meanwhile, Italy and France were first through to the quarterfinals after beating weakened visitors Switzerland and Canada respectively.
Djokovic and Nenad Zimonjic fell to Andrey Golubev and Aleksandr Nedovyesov 6-3, 7-6 (3), 7-5 before a full house in Belgrade. It was the second notable cup win for Golubev and Nedovyesov, who beat Roger Federer and Stan Wawrinka in doubles in 2014.
For Serbia not to lose a third time at home in four ties, Djokovic must beat Mikhail Kukushkin in the first reverse singles on Sunday, then hope 23rd-ranked Viktor Troicki, who lost to Kukushkin on Friday, beats 200th-ranked Nedovyesov in the last rubber.
Djokovic won his only previous match against Kukushkin in three sets in Shanghai in 2014.
Andy Murray won his second point for Britain when he and brother Jamie won in straight sets to lead Japan 2-1, giving Murray a chance to clinch the tie on Sunday against Kei Nishikori. Murray leads their head-to-heads 5-1, but Nishikori won their…