Wayne Douglas Gretzky (born January 26, 1961) is a Canadian former professional ice hockey player and former head coach. He played 20 seasons in the National Hockey League (NHL) for four teams from 1979 to 1999. Nicknamed "the Great One", he has been called the greatest hockey player ever by many sportswriters, players, the NHL itself, and by The Hockey News, based on extensive surveys of hockey writers, ex-players, general managers and coaches.