Andy Murray's opponent Jerzy Janowicz hits fastest serve of Wimbledon 2013

Andy Murray's semi-final opponent Jerzy Janowicz hits the joint-fastest serve of this year's Wimbledon championships with a 140mph rocket

The big-hitting Pole wastes no time showing off his serve in the quarter-finals, winning his first service game against compatriot Lukasz Kubot in just 54 seconds, including the booming ace.

Janowicz shares the 2013 serving speed record with himself, having dished up another 140mph delivery in a previous round.

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