The plus-minus is never affected when a power play goal is scored by either team. The statistic is sometimes called the plus-minus ratio even though it is a difference, not a ratio. It is also sometimes referred to as plus-minus rating although this is inaccurate as well.
A player's plus-minus statistic can be calculated for a single game or for the season as a whole. Plus-minus is mainly used to measure defenders and forwards who play a defensive role since offensive forwards are better measured by scoring statistics such as goals and assists. It is directly affected by team performance, thus accurate comparisons can only be made by taking into consideration the defensive performances of the team as a whole.
Despite not helping with the goal, the player would still receive a plus in the plus-minus statistic. The NHL started recording plus-minus in the season.
When the statistic was first implemented, general managers kept the information to themselves because they thought it would give their opponents an edge when preparing to play their team. This veil of confidentiality was lifted in , and the public finally gained access to what people thought was going to be a premier statistic. Despite this thought, the media was immediately skeptical about plus-minus. Many critics believe that plus-minus is a faulty statistic that fans should not take much value from in hockey.
Power play goals are scored by the team that has more players on the ice than the opposing team due to penalties. A penalty shot, which occurs when a team loses a clear scoring opportunity because of a foul, is a chance for a player to score a goal on the offending team without any opposition except the goaltender. Empty net goals are when a team scores a goal when there is no goaltender present at the net.
This NHL team used this ranking system for evaluating its own players. By the s, other teams were also using this system. Meaning, the ranking is determined by many factors out of the control of the player being evaluated. More specifically, the statistic depends on the team's overall shooting percentage, the goaltender's average save percentage, the performance of the opposing team and the amount of time an individual player is allowed on the ice.
Actively scan device characteristics for identification. Use precise geolocation data. See here. There are many times where the coach will rely on a shutdown line to defend against the top opposing team lines. As successful as they may be, the shutdown line will inevitably be overwhelmed and will pay the price in plus-minus. Furthermore, player deployment can also impact plus-minus. Although a strong scoring line will typically generate more offensive zone time, this stat can still be manipulated.
As an example, what if the coach deploys your line for the bulk of defensive zone face-offs? In end the end, you can expect your plus-minus stat to suffer once again. Here is my two cents on the plus-minus stat — it definitely has its limitations! My biggest complaint comes when the rating is applied to players on a line change.
Meanwhile, your teammate decides to change lines with you on the backcheck, behind the play. Suddenly, you find yourself on the ice with no chance of getting involved in the play, and the opposition happens to score.
As a result, you are negatively hit on the plus-minus even though you had no influence on the play and the goal-against was inevitable.
On the replay, you'll notice that all the Leafs players on the 2 nd wave of the power play stood no chance of preventing the shorthanded goal-against. Sadly, they all earned a -1 to their plus-minus, while the guilty party 1 st wave avoided the negative rating. Similarly, it would impact their plus-minus rating even without remotely being involved in the play. It is said that the NHL was privately monitoring the stat since , but only made available to the public in source.
Furthermore, the source mentions that plus-minus data was only added as far back as the NHL season. However, when I checked it out on the official NHL stats page, I can see values dating back to the season source.
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