Video: Sam Groth hits second-fastest Wimbledon serve against Roger Federer

Sam Groth recorded the second-fastest serve in Wimbledon history during his third-round encounter against seven-time champion Roger Federer this afternoon.

The Australian boomed down a 147mph serve in the opening set on Centre Court, which is 1mph shy of the record set by America's Taylor Dent.

Watch the video of Groth's historic serve below.

WATCH @SamGrothTennis hit the second fastest serve ever at #Wimbledon with this 147mph cannonball http://t.co/damFxZLEVR

— Wimbledon (@Wimbledon) July 4, 2015

Despite his rapid serving, Groth is two sets down to Federer in the match, which can be followed on Sports Mole by clicking here.