Andy Murray is out of the Gijon Open after losing his quarter-final against American Sebastian Korda in three sets.
British former world number one Murray, currently ranked 48th, won five successive games as he clinched the second set to force a decider.
But he fell to a 6-4 1-6 6-1 defeat against world number 47 Korda, who will meet France's Arthur Rinderknech next.
Murray, 35, was given a wildcard for the tournament - his first since September's Laver Cup.
The British number three came from a set down to defeat Argentine Pedro Cachin in the second round, having beaten Alejandro Davidovich Fokina in his opener.