just train so hard, that you propel your team to the state title. with the state title under your belt, the youth of the town will see how badass it is to win a state championship and they will play soccer. soon enough all the kids will play soccer and there won't be enough decent athletes the field a decent enough football team thus reducing him to mediocrity in high school football. if you start now, you'll be able to get back at him in like 20 years. good luck