record, as compared with current rules. Some leagues and competitions may instead use a points percentage system, changing the nature of this statistic. In this type of method, used in many group tournament ranking systems, the competitors are awarded a certain number of points per win, fewer points per tie, and none for a loss. The teams are then ranked by the total number of these accumulated points. One such method is the "three points for a win", where three points are awarded for winning a game, one point is awarded for a draw, and no points are awarded for a loss. The National Hockey League (which uses an overtime and shootouts to break all ties) awards two points for a win in regulation or overtime/shootout, one point for an overtime loss, and none for a regulation loss. Statistics Major League Baseball This table lists the best and worst winning percentages in the history of the National League (NL) and American League (AL) of Major League Baseball (MLB). Note: some team records sum to less than the season schedule (154 or 162 games) due to rain outs. National Basketball Association National Hockey League In the National Hockey League, teams are awarded two points for a win, and one point for either a tie (a discontinued statistic) or an overtime loss. It can be calculated as follows: See also Group tournament ranking system References Baseball statistics Sports terminology Percentages Tournament systems