 During rehearsals, Yvon Barrette (qv) was seriously injured when a  puck hit him in the knee. Barrette was worried that he would be  replaced with another actor. But George Roy Hill (qv) postponed  shooting scenes featuring Barrette so that he could return to the  film when he recovered. Barrette returned to filming 10 days later.  But to prevent any further injury, Barrette was doubled by  Ronald L. Docken (qv) during the hocking playing scenes.