Speedball
Speedball was invented by Elmer D. Mitchell in the early 1920's at the University of Michigan. Elmer was a physical education professor, who sought to develop a game that was not restrictive to the rules of any one sport that could be played outdoors in the fall and combined many elements found in other well-known sports. Speedball is a combination of football, basketball and soccer. Today, it is played in many American high school physical education classes. The sport is still struggling to turn into an actual sport played by club and high school teams.