Murray struggles to tame Melzer in Doha

(Reuters) - World number one Andy Murray laboured past Austrian Gerald Melzer 7-6(6) 7-5 to reach the quarter-finals of the Qatar Open on Wednesday after defending champion Novak Djokovic had also progressed with relative ease. A passive Murray dropped serve twice in the opening set and world number 68 Melzer saved eight set points with some brave hitting before the Briton took the opener on a tiebreak. Left-hander Melzer continued to strike the ball heavily, especially off the forehand side, an