Ultimate Tak Ball Extreme Sport

Ultimate Tak Ball, also known as UTB and UTB Live, is an extreme sport involving the use of stun devices.
Background
The sport, invented under the original name of Ultimate Tazer Ball by Leif Kellenberger, Eric Prum and Erik Wunsch, was first played in California. Two teams compete to get a large (24-inch diameter) ball into goal at either end of the 200 x 85-foot field.Players on both teams are all armed with stun gun devices. Under the rules of the game players are allowed to use the stun guns on opposing players who are in possession of the ball. The devices used emit a charge of three to five milliamps, sufficient to cause a localized muscle spasm but no permanent damage to any of the body's vital organs.