- Murray wins 7-6 (5), 2-6, 7-5 against world No 16 Zverev
- Scot will face qualifier Alexandre Müller in quarter-finals
Andy Murray achieved a remarkable result by knocking the fourth seed Alexander Zverev out of the Qatar Open, forcing his way into the quarter-finals in Doha.
The 35-year-old Scot produced a performance of customary grit to edge past Zverev 7-6 (5), 2-6, 7-5 in a gruelling contest lasting more than three hours. His reward is a last-eight match against French qualifier Alexandre Müller on Thursday.