1. By: Tanner Torres

2.  First invented by Dr. Paul Hawkins in 2001. First invented by Dr. Paul Hawkins in 2001.  Extremely complex computer system  Costs around $20,000-$25,000 per court for one week  Hawk-Eye is not featured at over 60 events across the ATP, WTA, and ITF tours

3.  10 high-speed cameras at different angles and positions around the court  Creates a 3D trajectory of the path of the ball  Uses the 3D trajectory to determine the exact touch area the ball made with the court when it bounced

4.  Exact bounce mark is determined and shown via virtual software  Using the triangulation of images from cameras players can see exactly whether the ball was in or out  Only a 3.6 mm margin of error

6.  “The ball's moving so fast these days that sometimes it's impossible for anyone to see, even a trained official. With instant replay we can take advantage of technology and eliminate human error. Having just a few challenges will make it both fun and dramatic for fans at the same time.”

7.  Each player is allowed 3 unsuccessful challenges per set  If the set reaches a tie-breaker, each player is awarded 1 extra challenge  If the player’s challenge is unsuccessful, then the player loses that challenge.

8.  Can measure speed of the ball at any point during a rally  Service patterns, length ran during rally, service comparisons, and percentage of time a player spends in different regions of court

9. The History of Hawk-Eye 2001System was developed by Dr. Paul Hawkins 2005Hawk-Eye tested by the ITF and passed for professional use 2006The Nasdaq-100 Open in Miami was the first tennis tour event to use Hawk-Eye 2006 The U.S. Open becomes the first grand-slam tournament to implement the Hawk-Eye challenge system 2007The Australian Open and Wimbledon Championships also adopt the Hawk-Eye System 2008 Announced uniform set of rules: 3 incorrect challenges per set plus one extra in the event of a tiebreak 2012Hawk-Eye is now featured at over 60 events across the ATP, WTA, and ITF tours.

10.  BBC. "Hawk-Eye Challenge Rules Unified." BBC News. BBC, 19 Mar. 2008. Web. 11 Nov. 2012..  Hawk-Eye Innovations Ltd. "Tennis." Hawk-Eye Innovations. Hawk-Eye Innovations Ltd., n.d. Web. 11 Nov. 2012..  Mullins, Justin. "Hawk-Eye in the Crosshairs at Wimbledon Again." - IEEE Spectrum. - IEEE Spectrum, June 2008. Web. 11 Nov. 2012..  Topend Sports. "Hawk-Eye Line-calling System." Hawkeye Tennis Line- Calling System. Topend Sports, 10 June 2012. Web. 11 Nov. 2012..  Tsang, Jason. "Technology in Tennis: Hawk-eye." Jason Tsang's Blog. Blogger.com, 14 July 2006. Web. 12 Nov. 2012..