Tense wait for Murray

He is starting well but seems to be struggling to finish his matches!

clipped from news.bbc.co.uk Andy Murray win keeps alive World Tour Finals hopes Andy Murray must wait to find out if he has reached the semi-finals of the ATP World Tour Finals in London after a three-set win over Fernando Verdasco. The Briton came through 6-4 6-7 (4-7) 7-6 (7-3) but now faces a nervous wait until Thursday's evening match between Roger Federer and Juan Martin del Potro to see if he has qualified from the four-man group. Any win for Federer will take Murray through but a straight-sets win for Del Potro would put the Scot out, while a three-set win for Del Potro would see it come down to the percentage of games won by Murray, Federer and Del Potro.