Montreal Canadiens prospect Nathan Beaulieu and his father, Ontario Hockey League coach Jacques Beaulieu, are facing assault charges.
Strathroy-Caradoc police say the father and son have each been charged with two counts of assault.
Police say the charges stem from an altercation Saturday at a house party that followed a charity golf tournament.
Two people suffered minor injuries, police say.
A June 11 court date has been set.
Nathan Beaulieu was selected 17th overall by the Canadiens in the 2011 NHL draft.
The 20-year-old defenceman had seven goals and 24 assists with the AHL's Hamilton Bulldogs this season. He also appeared in six games with the Canadiens, registering two assists.
The Canadiens had recently called up Beaulieu for their playoff run, starting at home against Ottawa on Thursday
Jacques Beaulieu, 45, was nominated for OHL coach of the year this season after leading the Sarnia Sting to a 35-28-5 record. He previously served as a head coach with the Quebec Major Junior Hockey League's Saint John Sea Dogs, where he coached Nathan for one season, and as an assistant with the OHL's London Knights.