Knockout, also known as the knockout game and knockout king, is a violent activity played by teenagers. The object of the game is to render unconscious (knockout) an innocent pedestrian with one punch. The game can result in serious injuries or death for its victims. Players face criminal charges.
In 1992, a teen stabbed an MIT student through the heart, killing him. In another case, a St. Louis, Missouri teenager allegedly attacked a pedestrian who hit his head on the ground and died in hospital. In May 2013, a 51 year-old man died from his injuries after he was attacked in Syracuse, New York, by two teenagers.
- Salter, Jim (December 24, 2011). "Unprovoked attacks at heart of 'Knockout King'". Associated Press. Archived from the original on December 30, 2011. Retrieved December 29, 2011.
- "MIT student's death attributed to violent "knockout" game". The Day. September 23, 1992. Retrieved 22 April 2011.
- Mann, Jennifer (April 22, 2011). "Violence for fun may be spreading among teens". St. Louis Post-Dispatch. Retrieved 22 April 2011.
- Benny, Michael (May 30, 2013). "Deadly and savage attack on Syracuse man was part of teen game called 'Knock Out'". CNYCentral.com. Retrieved 30 May 2013.