An empty net goal, or colloquially an empty netter, occurs in several team sports when a team scores a goal into a net with no goaltender present. Also, if a goalie is pulled and the other team scores the goalie is not credited with a goal against them.
Ice hockey
Empty net goals usually occur on two occasions in ice hockey:
In the final minutes of a game, if a team is within two goals, they will often pull the goalie, leaving the net defenseless, for an extra attacker, in order to have a better chance of scoring to either tie or get within one goal. However, if the team holding the lead gains control of the puck, they will often shoot at the empty net after clearing center ice. It is less common for a team to shoot from their own zone at an empty net because icing could occur if the shooter misses the net. In some circumstances, a team may also pull their goalie when they are on a two-man advantage, even if not nearing the end of the game, to gain an advantage of six attackers to three to even further increase the chances of scoring.
In the case of a delayed penalty, the non-offending team will often pull their goaltender for an extra attacker in this situation as well. Empty net goals that are scored in this case are accidental own goals because the whistle would be blown if the offending team touches the puck. An own goal is usually scored when a forward from the non-offending team passes backwards to a defenseman that is not in position, and the puck slides all the way down the ice into the team's own net, or when players of the non-offending team are being pressured in their own zone and they accidentally knock it into the net. This goal is credited to the last player on the scoring team who touched the puck.
Goaltender's statistics
Empty net goals are charged to the goaltender that was previously in net as empty net goals against. Empty net goals do not count against a goaltender's goals against average or their save percentage, but rather are tracked separately. A goaltender can, however, be credited with a loss as the result of an empty net goal. In an unusual case, goaltender Adam Wilcox, in his lone NHL appearance to date, did not concede a goal but was credited with the loss because of the aforementioned scenario.
With rule changes in the 2010s, the goalie can also be pulled in handball. Unlike the soccer and ice hockey examples, this is not only done in desperate situations near the end of a game, as scoring even on a goal with a goalkeeper in it is easier in handball than ice hockey or soccer. A loss of ball possession and the inability to quickly get a goalie back in time almost always results in an empty net goal.