Nathan Harris was seen on video knocking a 13-year-old player to the ground during the game as the boy ran out of bounds.
The Mapleton teen suffered a mild concussion and was sidelined for the rest of the football season.
Harris claimed he was defending himself and his own son from being hit by runner.
Harris was arrested a few days later and booked on suspicion of a felony child abuse charge, but the Utah County attorney's office later declined a felony against him.
The prosecutor's office said a felony was not warranted because the boy's injury wasn't serious enough.
Payson officials then cited Harris on the misdemeanor assault charge. He is expected to make an an initial appearance in court on December 13.