Like soccer, hockey uses video replays in major competitions to make key decisions. While it is not immune to controversies over the decisions themselves, hockey officials believe its video system is less intrusive and more transparent than soccer's. In soccer, a video assistant checks key decisions and suggests a VAR review if it appears the pitch referee has got it wrong. Hockey uses the challenge system where a team can ask for a review if they believe a decision is wrong. If the video umpire agrees, they keep their right to a challenge; if not, they lose it for the rest of the game.

Source: International New York Times January 11, 2020 01:07 UTC