Federer express flattens Croatian giant

Wimbledon number one seed Roger Federer stormed into the quarter-finals with a straight-sets dismissal of towering Croat Ivo Karlovic on court one.

Karlovic grabbed the headlines at last year’s championships when he dumped out defending champion Lleyton Hewitt in the opening round but hopes of another giantkilling act were snuffed out by Federer.