Thirty-six years ago today, on April 7th, 1989 (March 2nd, 1989 in the lunar calendar), Japan created the original football flip foul serve method. Original somersault foul ball In 1989, the football team of Tsukuba University in Japan invented a serving method of somersault foul ball. When serving, both hands held the ball, touched the ball to the ground for a somersault, and then quickly threw it out. Much farther than the general throw-in method due to the use of the full swing force of the body. At first, this action was considered a foul and repeatedly protested, but it has been recognized because this tactic holds the ball with both hands and holds it above your head, and touches the ground with both feet at the moment of throwing, which does not violate the rules of football. In the actual competition, the team of Tsukuba University has used this technique to improve the scoring rate, and it has attracted more and more attention from Japanese football circles. It is reported that players with a little gymnastics foundation can simply master this technique.