Hawkeye defended

Hawkeye technology allows umpires and players to review a line call if a challenge is made, with screens showing the estimated landing point of the ball by tracking its trajectory in flight.

It is widely regarded as a revolutionary technique, has been introduced to cricket and is being trialled in football.

But, champion and world number one Roger Federer repeatedly criticises Hawkeye and launched a foul-mouthed tirade during the Wimbledon final last Sunday when a Rafa Nadal challenge was upheld.

"We feel it has worked very well and matched our expectations," a spokesman for the All England Club said in response to Federer's post-match criticisms. "From what we can see it was welcomed warmly by spectators as part of the entertainment&hellip

"With very few exceptions it was also welcomed by the players. It's been an overwhelming success and it will be here to stay."