The 1-3-1 power play formation has become the go to power play system for most high level teams. Almost every NHL team is using the 1-3-1, so there must be a reason.
The reason? The 1-3-1 has the ability to spread players out inside the zone, keep a player in front of the net at all times, and place shooters in key positions so they can shoot off the pass.
Power play systems like the overload, umbrella, set pick plays, etc... can be effective until the other team knows how to play against them. The 1-3-1 formation allows teams an endless amount of options and gives teams the ability to get into other formations very quickly, adding an element of surprise and confusion to the penalty killers.
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