Great Britain's bid to reach the last eight at the Davis Cup Finals suffered a blow as Dan Evans lost the opening match against the Czech Republic.
With victory in the group tie enough to see Britain through, Evans lost 6-2 7-5 to Tomas Machac in Innsbruck.
The Briton led 5-2 in the second set, but lost the momentum he had regained.
Leon Smith's team will still qualify if Cameron Norrie beats Jiri Lehecka, followed by a win for Joe Salisbury and Neal Skupski in the doubles.
Victory over the Czechs in the tie will guarantee Britain - who beat France 2-1 in the best-of-three format on Saturday - a place in the quarter-finals.