British number two Cameron Norrie sealed Great Britain's place in next year's Davis Cup qualifiers with victory over Poland's Olaf Pieczkowski.
Norrie produced a professional performance, dropping just three points on serve, to win 6-4 6-4 against the world number 484 and give Britain an unassailable 3-1 lead in the best-of-five World Group 1 tie.
Wimbledon champions Julian Cash and Lloyd Glasspool had missed an earlier chance to seal Britain's place in February's first round when they lost their doubles rubber.
The world number one pairing, making their Davis Cup debuts, were stunned 3-6 6-3 7-6 (8-6) by Karol Drzewiecki and Jan Zielinski.