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We hebben de 10.000e hawk-eye challenge achter de rug, en op USA Today is daar een leuk artikel over verschenen.
Paar stukjes:

Overall, the men have a success rate of 35% in the 6,279 challenges conducted through last week's tournament at Indian Wells, Calif., according to the ATP Tour. The women are only slightly better at 36%, but they challenge about half as often with a total of 3,693 attempts.

Novak Djokovic is the ATP's resident eagle eye. The third-ranked Serb has overturned incorrect calls 55% of the time, the only player with at least 50 challenges who is correct more than half the time. At the other end of the spectrum among top players is Andy Murray of Scotland, who is wrong 75% of the time.

Rafael Nadal, with who has a mediocre 36% success rate, says he sometimes challenges simply to ease his nerves. "(To) relax a little bit," the No. 1 Spaniard says.

But he also intimated that he distrusts the system, which uses computer simulations based on 10 video cameras to reconstruct the ball's trajectory. The result is then broadcast on widescreen TVs on court for players and fans to see.

"I think the machine is not exactly OK," Nadal said.

Some argue the Hawk-Eye system causes umpires to abdicate their responsibility to overrule, instead relying on players to take matters into their own hands.

"The umpires and line judges are not maybe as sharp as they used to be because they have Hawk-Eye most weeks now," said No. 4 Murray, who crushed Victor Troicki of Serbia 6-1, 6-0.

Onderaan nog een tabel met challenges per speler. Federer, toch een fervent tegenstander van het systeem, heeft het vaakst gechallenged! Hij heeft natuurlijk ook veel partijen gespeeld, Safin kan wel eens degene zijn die relatief het vaakst de hawk-eye consulteert.