America's Mardy Fish has been knocked out of the Dubai Tennis Championships by Mikhail Youzhny.
World number 34 Youzhny eased to an opening-set victory, breaking on three occasions to wrap up a 6-2 success.
The next set was much more even, as both players held their service games to force a tie-break.
Fish, who is currently ranked eighth in the world, struggled with his serve in the breaker and he did not pick up a single point on his way to a 7-0 defeat.
