Great Britain lost 3-1 to Spain in their Davis Cup tie after newbie Cameron Norrie lost four sets to world number 21 Albert Ramos-Vinolas.
Norrie, 22, ranked 144, lost 7-6 (7-4) 2-6 7-6 (7-4) 6-2 in three hours and 43 minutes in Marbella in another superb effort after coming back from two sets down on Friday to defeat world number 23 Roberto Bautista Agut.
Kyle Edmund could have played in a deciding fifth rubber had Norrie won.
“I can’t speak highly enough of what Cam has done all weekend,” Great Britain captain Leon Smith said.
“The only way is up for him.”
Britain now face a play-off in September which they need to win to stay in the World Group in 2019.