British number three James Ward has gone out of the Claro Open Colombia with a straight sets loss to Taiwan's Jimmy Wang.
World number 152 Ward was broken four times by Wang and lost 6-3 6-1 in the second round in Bogota.
The defeat denied the 27-year-old his first ATP Tour quarter-final since his run to the Queen's semi-finals in 2011.
Londoner Ward had moved into the second round after first round opponent Matt Ebden retired in the second set.
Ward, who had to qualify, was leading 6-4 3-0 when Australian Ebden was forced to pull out.
Wang overcame Michal Przysiezny 7-6 (7-4) 4-6 6-3 to set up the match with the Briton.