Murray survives grueling day for top seeds at ATP-WTA Cincinnati

Double Olympic champion Andy Murray bucked the upset trend as the Scot reached the quarter-finals of the ATP-WTA Cincinnati Masters, winning his 600th career match. Murray's 90-minute victory on Thursday contrasted with the upset losses suffered by elite rivals Rafael Nadal and Stan Wawrinka, both of whom exited in the third round. Top seed Murray is chasing the number one ranking of absent Novak Djokovic with the US Open approaching on August 29.