Doha [Qatar], February 22 (ANI): Former World No. 1 Andy Murray was knocked out of the Qatar Open by 18-year-old Jakub Mensik in an exceptional marathon second-round match in Doha. Czech overcame Murray 7-6(6), 6-7(3), 7-6(4) in a phenomenal three hours and 23 minutes second-round battle at the hard-court ATP 250 in Doha. “I’m just speechless right now, I don’t know what to say. I know that a lot of the fans wanted Andy to win today, so hopefully they will come to watch my match tomorrow,” said Mensik as quoted by ATP. “I’m just happy. It was a tough match today. Andy is an unbelievable player…