I noticed when reading the sport pages that in the National Hockey League this year some games are played to a tie while others are logged in to overtime. Could you please tell me how it's determined whether a game goes into overtime? And when did this rule change?
If an NHL regular-season game is tied at the end of regulation, the outcome is determined by a five-minute, sudden-death overtime period. If neither team scores, both are awarded a tie and one point in the standings. If one team scores, it receives a win and two points while the losing team earns an overtime loss (OL) and one point. During the playoffs, the two teams play 20-minute sudden-death overtime periods until one team scores.