Murray tested in Vienna as No 1 race continues

Andy Murray's pursuit of the world No 1 ranking was severely tested by Slovak left-hander Martin Klizan in his Vienna opener on Wednesday before the British star clinched a 6-3, 6-7 (5/7), 6-0 win.

The 29-year-old Wimbledon and Olympic champion, who is closing in on Novak Djokovic's top ranking, took his season record to 66 wins and just nine losses.

Murray's best chance of taking the world No 1 spot will be to capture the title in Vienna, where he was champion in 2012, as well as next week's Paris Masters.