Video obtained by ABC Houston shows Pelicans assistant coach Joe Boylan being punched on the sideline at the end of a game against the Rockets in Houston on Saturday.

Manuel Garcia, 38, was charged with misdemeanor assault for the incident, with his girlfriend also charged for allegedly preventing police from getting to him.

Prosecutors in Houston reportedly don’t know why Garcia made the decision to sock an unsuspecting Boylan, who fell to the ground after the punch.

The Rockets banned Garcia for life and he could be facing up to a year in jail, according to TMZ.