Andy Murray has survived a close encounter with Croatian man-mountain Ivo Karlovic to reach the third round at Wimbledon.

It looked a dangerous match for the world number four and so it proved, with Murray making only eight unforced errors but still dropping a set before coming through 7-5 6-7 (7/5) 6-2 7-6 (7/4).

A break of serve at the start of the third set proved a turning point for the home hope, and he edged the fourth-set tie-break after his opponent served an untimely double fault.