The Dallas Stars fired coach Glen Gulutzan on Tuesday, an expected move by new general manager Jim Nill for a franchise that has missed the playoffs a record five straight seasons. Gulutzan’s dismissal came about two weeks after Nill replaced Joe Nieuwendyk, who was fired after four seasons. Gulutzan had the Stars in playoff contention in both his seasons, but Dallas faltered down the stretch each time. The Stars were 64-57-9 under Gulutzan, including 22-22-4 this season. The Stars plucked Gulutzan from their top affiliate, the Texas Stars of the AHL, after he had spent eight years as a head coach in the minor leagues . . . Slovakia defeated the United States, 4-1, and the Czech Republic routed Norway, 7-0, in group finals for both teams to reach the quarterfinals at the ice hockey world championships in Helsinki. The US had a chance to win the group, but finished third and will meet Russia in the quarterfinals on Thursday. In Stockholm, the other group leader, Switzerland, defeated Belarus, 4-1, to achieve its best group record (7-0) at the worlds. Switzerland won its group, followed by Canada, Sweden, and the Czechs.