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How to measure ball speed
Around the Academy:

Lleyton Hewitt's serve is measured as 117mph
Lleyton Hewitt's serve is measured at Wimbledon

Not even the biggest hitters in tennis are a match for the IBM radar gun used at Wimbledon.

The radars measure the speed of service throughout the tournament.

However fast the players serve, the IBM gun can always match the speed - even if their opponents can't.

How does a radar gun work?
During Wimbledon, two specially designed radar sensors are positioned behind the baseline at either end of the centre court, as well as the number one, two, three, 13 and 18 courts.

Once a player strikes the ball, the radar guns detect its speed.

The information is flashed up on the court-side screens.

Details are also automatically recorded on IBM's central tournament database.


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Ace fact
Tennis may be fast - but badminton is even faster
With players smashing the shuttlecock at speeds of up to 160 mph, badminton is in fact the world's fastest racquet sport.



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