Jordan Nelson and Alex Hanson scored two goals each to lead Williston past Jamestown 6-2 on Saturday at Wilson Arena.
The Coyotes, one of the top teams in the West, scored three third-period goals to put in out of reach.
Williston won the for the second straight night after winning in Mandan on Friday.
Ben Sorenson got his third goal of the weekend for the Blue Jays. Devin Schauer added one in the third as JHS fell to 0-2-1 overall and 0-1-1 in the West. They tied Dickinson 4-4 Friday.
The Jays are at Minot Friday and Bottineau Saturday.