Top seed Andy Murray continued his unbeaten streak against John Isner on Friday at the Erste Bank Open 500, improving his FedEx ATP Head2Head record over the big server to 7-0 with a convincing 6-1 6-3 quarter-final win. Next up for the Brit in the semi-finals is fifth seed David Ferrer, a 6-3 3-6 7-5 winner over Viktor Troicki in a marathon match. Murray leads his FedEx ATP Head2Head rivalry over Ferrer 14-6. In a situation Isner doesn’t often find himself in, Murray accumulated more break points chances than the American (9 to 3) and put Isner on the defensive in many of his service games. Murray saved all three break point chances against him in the second set to...