A father pulled a gun on a youth football coach because his son wasn't getting enough playing time, police said.

Wayne Derkotch, 40, was arguing with the coach Sunday morning during a game of 6- and 7-year-olds in northeast Philadelphia when he pulled out the gun, police said.

No shots were fired and no one required medical treatment, authorities said.

Derkotch was charged with aggravated assault, simple assault and reckless endangerment. He did not immediately return a telephone message left at his home Monday.

A referee who allegedly threw a punch at a man was also arrested on assault charges, but it was not clear if that fight was related to the first altercation, police spokeswoman Lisa Rotolo said.