<P> In 1987--88 and since 1995, the American Hockey League has awarded teams one point in the standings for an overtime loss (OTL). In 1998, the AHL introduced a rule where teams will play the five - minute overtime period with four skaters and a goaltender, rather than at full strength (five skaters), except in two - man advantage situations . In a two - man advantage situation, the team with the advantage will play with five skaters against three skaters . The rule was popular and adopted by the NHL and ECHL the next season . </P> <P> Alex Ovechkin has the record for most NHL overtime goals with 20 . </P> <P> In the Stanley Cup playoffs and in all one - game playoffs, overtime periods are played like regulation periods except for the golden goal rule--in an overtime period, the game ends when one team scores a goal; the teams are at full strength (five skaters, barring penalties), there is no shootout, and each overtime period is 20 minutes with full intermissions between overtime periods . Three of the game's legendary players, Mark Messier (109 playoff goals), Mario Lemieux (77 goals), and Gordie Howe (68 goals) never scored a playoff overtime goal . </P> <P> In many leagues (including the NHL for regular - season games since the 2005--06 season) and in international competitions, a failure to reach a decision in a single overtime may lead to a shootout . Some leagues may eschew overtime periods altogether and end games in shootout should teams be tied at the end of regulation . In the ECHL, regular season overtime periods are played four on four for one five - minute period . In the Southern Professional Hockey League, regular season overtime periods are played three on three for one five - minute period, with penalties resulting in the opponents skating one additional player on ice (up to two additional players) for the penalty for the first three minutes, and a penalty shot in the final two minutes . The AHL, since the 2014--15 season, extended the overtime to seven minutes, with the last three minutes reduced further to three men aside and teams getting an additional skater for each opponent's penalty . The idea of using 3 - on - 3 skaters for the entirety of a five - minute overtime period for a regular season game was adopted by the NHL on June 24, 2015, for use in the 2015--16 NHL season . </P>

What are the overtime rules in playoff hockey
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