From the 1999–2000 until the 2003–04 seasons, the National Hockey League decided ties by playing a single five-minute sudden death overtime period with each team having four skaters per side (plus the goalie). In the event of a tie, each team would still receive one point in the standings but in the event of a victory the winning team would be awarded two points in the standings and the losing team one point. The idea was to discourage teams from playing for a tie, since previously some teams might have preferred a tie and 1 point to risking a loss and zero points. The only exception to this rule is if a team opts to pull their goalie in exchange for an extra skater during overtime and is subsequently scored upon (an "empty net" goal), in which case the losing team receives no points for the overtime loss. Since the 2015–16 season, the single five-minute sudden death overtime session involves three skaters on each side. Since three skaters must always be on the ice in an NHL game, the consequences of penalties are slightly different from those during regulation play. If a team is on a powerplay when overtime begins, that team will play with more than three skaters (usually four, very rarely five) until the expiration of the penalty. Any penalty during overtime that would result in a team losing a skater during regulation instead causes the non-penalized team to add a skater. Once the penalized team's penalty ends, the number of skaters on each side is adjusted accordingly, with the penalized team adding a skater in regulation and the non-penalized team subtracting a skater in overtime. This goes until the next stoppage of play.