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Who remembers John McEnroe's famous "You cannot be serious!" rant at Wimbledon 1981 when disputing a close line call with the officials? That, and many other similar incidents involving any number of other players throughout the years have provided an interesting sideshow to the tennis action. But when was the last time you saw such a heated exchange over a close line call?

Not for a couple of years, I'm willing to bet. The reason? The adoption of the Hawk-Eye computer system which tracks the position of the ball and is able to display instant replays of where each shot lands in the case of disputed line calls. At the start of each set, each player is allocated two chances to challenge a call which they believe to be incorrect and get instant objective feedback that demonstrates whether the ball was in or out. If the challenge is upheld the call is overruled and the player retains the challenge; otherwise the player loses one challenge.

This now forces players to either "put up or shut up" when it comes to line calls. If the player genuinely believes the call to be wrong he or she can dispute it in a legitimate way and either be vindicated immediately or have the call confirmed. The result may at times genuinely shock the player - but it's not surprising that he or she will sometimes believe a ball to favour them simply because they desperately need it to, regardless of whether it actually does or not.

Either way, having objective proof that the umpire and line judges are not out to get them can help players channel their thoughts and energy into the match rather than directing it at the officials, and can also help the line judges to call it as they see it and not allow themselves to be intimidated by the players.

The fact that there is now a legitimate process for dealing with disputes also undermines the negative tactics of players who in the past may have gotten away with causing an on-court disturbance for no other reason than to disrupt their opponent's rhythm, regardless of whether the player truly believed the call to be wrong. Many have used such underhand tactics to great effect to unsettle their opponent, and in my opinion there is no room in tennis for subtle cheating of this kind.

For these reasons I believe the adoption of this technology to be a good development and one that enhances rather than detracts from the wonderful game of tennis.

Technology can help you - with a lobster tennis machine. Read more at http://tennis-ball-machines.net.

Nike Air Jordan 60 + Atlanta Hawks Colorways

This year will be a major concern of the NBA Hall of Fame, because Michael - Jordan, the greatest basketball player who brought the basketball into a new level and was instrumental in popularizing the NBA around the world, was elected to the Basketball Hall of Fame on April 6, 2009 and was inducted on September 11, 2009.

Few of us can do well as Jordan, what we can do is to remember the glorious fragement. Air Jordan shoes have complete the great mission. They designed a series of shoes with unique style to record the whole history of this great basketball player.

Air Jordan 60 +(Sixty Plus) is the latest hybrid sneaker that Jordan Brand has debuted after the Air Jordan Spizike, and its new Atlanta Hawks colorways will go on the market this October.

This particular colorway consists of black nubuck and textured leather with only hints of white and Varsity Red, and takes features from all of the shoes Jordan played in while scoring 60 or more points: the Air Jordan I, the Air Jordan II, the Air Jordan V and the Air Jordan VII. This Air Jordan 60 + will also release other exclusive colorways of Cleveland Cavaliers, Boston Celtics and Detroit Pistons and so on.  Let’s rub our eyes and wait. (Collected by killersneakers.com)

Here is the list of dates, 60+ points, game and sneaker from Michael Jordan’s career:

04/20/86 – 63 points – Chicago vs. Boston – Air Jordan 1
03/04/87 – 61 points – Chicago vs. Detroit – Air Jordan II
04/16/87 – 61 points – Chicago vs. Atlanta – Air Jordan II
03/28/90 – 69 points – Chicago vs. Cleveland – Air Jordan V
1/16/93 – 64 points – Chicago vs. Orlando – Air Jordan VII

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Would this make hawk eye more accurate?

To solve hawk eye inaccuracy (and yes there is some), how about hot spot is introduced as in cricket to locate the centre of the ball. From there hawk eye could be placed over top with now a fully accurate centre point. Any probs?

Excellent idea. And although Skittles' answer is a good one, the initial heat loss is quite fast (graph is a bit like radioactivity delay, not as fast as that but non-linear). So - well done. And while we're fixing the tennis technology, how about some statistics graduate developing a multivariate prediction model for cricket's Snickometer. That would allow formulae to be programmed into a computer that could indicate exactly what the cricket ball had hit, based on the amplitude, frequency and other characteristics of the Snickometer wave. The near perfect tool for the 3rd umpire (and maybe for the ones out on the field!)

Road work to cause detours around Black Hawk College
Centennial Contractors will be installing storm sewer and catchbasins beginning Monday on 70th Street from 34th Avenue to DeereRoad in Moline.

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