Ice hockey - Defensive strategy - Neutral zone trap
"The neutral zone trap (often referred to as simply the trap) is a defensive strategy used in ice hockey to prevent an opposing team from proceeding through the neutral zone (the area between the blue lines) to force turnovers. The strategy is generally used to level the playing field for teams that are not as offensively talented as their opponents, although the trap can also be used by teams simply looking to protect a lead late in the game. The trap was innovated by the Toronto Maple Leafs in the 1920s and 1930s, and more recently in the mid to late 1990s and early 2000s by the New Jersey Devils." [Neutral zone trap. Wikipedia]
The diagram example "Ice hockey - Defensive strategy - Neutral zone trap" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Hockey solution from the Sport area of ConceptDraw Solution Park.