NHL-Penguins name Mike Johnston as head coach

June 25 (Reuters) - The Pittsburgh Penguins have named Mike Johnston as their head coach, the National Hockey League team said on Wednesday. Johnston, who was coach of Western Hockey League's Portland Winterhawks since early in the 2008-09 season, replaces Dan Bylsma, who was fired three weeks ago. (Reporting by Frank Pingue in Toronto; Editing by David Goodman)