BILLINGS, Mont. (AP) _ Rocky Mountain football coach Rick Ulrich announced his resignation to become running backs coach at Fordham.

Ulrich had a 7-23 record in three seasons at the NAIA Division II school, but that included eight forfeits last season for using an ineligible player.

''It is the right situation for us,'' Ulrich said Sunday. ''You'll always have doubts if you made the right decision, but something inside tells you when it's the right one.''

Prior to joining Rocky in 1989 as offensive coordinator, Ulrich coached at Albany State and Princeton.

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SUDBURY, Ontario (AP) - Derek Armstrong scored five goals as the Sudbury Wolves rallied to beat the Newmarket Royals 7-5 in the opening game of their best-of-7 Ontario Hockey League quarterfinal seriess.

''I have to credit my linemates, who worked hard in the trenches setting me up for the goals,'' said Armstrong, who set a team record Sunday for goals in a playoff game.

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UNITY, Saskatchewan (AP) - Stephane Roy scored with 2:20 left to give the Canadian national team a 5-3 victory over the Czech Republic in an exhibition game. Adrian Aucoin, Todd Hlushko, Trevor Sim and Jackson Penney also scored for Canada in Sunday's game.

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TORONTO (AP) - Sean Rowe scored three goals and Scott Farrell added two as Acadia of Nova Scotia routed the University of Toronto 12-1 on Sunday for its first Canadian University hockey title.

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MINNEAPOLIS (AP) - John Roethlisberger of Minnesota became the first gymnast to win the men's Big Ten all-around title in four straight years.

Roethlisberger finished the two-day competition Sunday with 112.275 points. Kip Simons of Ohio State was second with 110.350.