PITTSBURGH -- The Pittsburgh Penguins' slow start cost Mike Johnston his job.
The Penguins fired Johnston and assistant Gary Agnew on Saturday morning with the high-profile team languishing in the middle of the pack in the crowded Metropolitan Division.
Mike Sullivan, who was head coach of the Boston Bruins from 2003-06 and was serving as the coach of Pittsburgh's affiliate in the American Hockey League, replaces Johnston.