Andy Murray continued his uncertain form since reaching the Australian Open after suffering a straight-set defeat at the hands of 18-year-old Croatian Borna Coric in the Dubai Duty Free Championships quarter-finals.
Murray, ranked three in the world, was beaten 6-1 6-3 in just 79 minutes marking his second quarter-final exit in as many tournaments after crashing out in Rotterdam a fortnight ago.
Coric, ranked 84 in the world, adds Murray to a list of conquests that already includes Rafael Nadal, who he defeated last year in Basel. Coric will now face either Richard Gasquet or Roger Federer for a place in the final.
World number one Novak Djokovic now faces qualifier Marsel Ilhan and Tomas Berdych will take on Sergiy Stakhovsky in the quarter-finals.
Murray played over 50 unforced errors in his match against Coric, suggesting that improvement is needed ahead of Great Britain's Davis Cup tie against the United States next month.