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Last Updated: Tuesday, 21 March 2006, 21:59 GMT
Hawk-Eye set for Wimbledon trial
Hawk-Eye will track the trajectory of the ball
Wimbledon's grass will not affect Hawk-Eye's accuracy
Wimbledon could be ready to use instant replays to decide on disputed calls as early as next year.

Hawk-Eye technology makes its debut on the men's and women's tours this week when it will be used to judge line calls at the Nasdaq-100 Open in Miami.

And Hawk-Eye's inventor says the system will be tested at Wimbledon this year.

"If that all goes well, they'll have the information that they need as to whether they want to go ahead in 2007," Paul Hawkins told Sport on Five.

The International Tennis Federation (ITF) approved the technology last year and it was first tried out at the end-of-season Champions Tour event at the Royal Albert Hall.

Each player will receive two challenges per set to review line calls
If the player is correct with a challenge, then the player retains the same number of challenges
If the player is incorrect with a challenge, then one of the challenges is lost
During a tie-break game in any set, each player will receive one additional challenge
Challenges may not be carried over from one set to another

In December, it received its first exposure at an elite event, at the Hopman Cup in Australia.

"Quite rightly, they've gone through a very rigorous testing process over the last 18 months to make sure, not only that the system's better than line calling, but that it's at a level where the players, fans and officials have absolute confidence in it," said Hawkins.

He added: "Of the last 250 tests we've done with the ITF, we've got all of them correct - 100% - so even if it's 1mm out, it is genuinely out."

The system uses 10 cameras around the court to track the trajectory of the ball and produce a 3D image, with each bounce covered by at least five cameras.

I guess it's going to affect me the most
Roger Federer

In Miami, Hawk-Eye will be used only on the stadium court, with disputed calls reviewed on video screens visible to the players, umpire and fans in a process expected to take less than 10 seconds.

The likes of Andre Agassi and Maria Sharapova have already welcomed the innovation, although world number one Roger Federer is reserving judgement.

"I hope I play on the outside courts so I don't have to face it," he joked.

"I guess it's going to affect me the most, because I'll probably play many matches in the next few months on centre courts."

As for the long-term success of the system, Hawkins said: "Time will tell - how the players react to it is going to be important."

Interview: Hawk-Eye inventor Paul Hawkins

See Hawk-Eye in action

Hawk-Eye to help tennis umpires
18 Oct 05 |  Tennis
How does Hawk-Eye work?
06 Sep 05 |  Laws & Equipment

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