The NHL needs to avoid issues like the one that occurred in Game 4 between the Edmonton Oilers and the Anaheim Ducks. A complicated, and somewhat messy overtime call that led the NHL’s War Room to go with the on-ice call raised questions less about whether the puck actually crossed the goal line than about whether there was proof.

An entertaining, near must-win game for Edmonton ended in the most disappointing way. A puck, thrown into the crease, bounced off Darnell Nurse, then between Tristan Jarry’s legs. It slid underneath him and started coming to a stop as it crossed the line.

The Ducks thought it went in. The Oilers were hoping there wasn’t enough evidence to prove it did.

That’s when things got confusing.