Auston Matthews, who is expected to be the No. 1 pick in the N.H.L. draft, had a goal and an assist to lead the United States to a 4-1 victory over Denmark in the world junior hockey championship in Helsinki, Finland.
Davis, who was mourning his mother when he earned a gold medal at the 1976 Montreal Olympics, had more than 100 victories as an amateur but never won a world title.