Simon Dyson had a 1-under 71 Saturday after a final-hole double bogey left him with a one-stroke lead heading into the final round of the 100th Spanish Open.
Dyson flew the green with his approach shot but failed to get out of a bunker in regulation to finish at 5 under overall. Spain's Pablo Larrazabal (69) and Denmark's Soren Kjeldsen (71) shared second place.
Dyson was disappointed with his finish, describing his 6-iron from 180 yards out coming out like a bullet.
"I should be out of sight, the way I am playing," he said. "So it was a disappointing way to finish because for 17¾ holes I played really good. My shots all day, except for the last, were straight down the flags."
Dyson is the highest ranked player in the field at No. 36 and seeking a seventh European Tour victory.
Italy's Matteo Manassero had a 76 to share 12th place.