Jamie Murray and Dom Inglot came from behind to win their Davis Cup doubles match and put Great Britain 2-1 up in their tie against Uzbekistan.
The pair recovered from losing the first set to beat Denis Istomin and Sanjar Fayziev 4-6 7-6 (10-8) 6-2 6-3.
It means Britain need victory in one of Sunday's two singles rubbers to win the best-of-five-match tie in Glasgow.
Victory would ensure GB are seeded in the revamped Davis Cup when it starts in February.
Leon Smith's team started the day level with their visitors after victory for Dan Evans and defeat for Cameron Norrie in Friday's singles matches - both of which went to five sets.