How does VAR work in MLS?

Video Assistant Referee technology has been used in MLS since 2017. VAR reviews are conducted for four categories: goals and buildup, penalty decisions, direct red card incidents, and mistaken identity.

The VAR team operates from a centralized replay center, communicating with the on-field referee. When a potential error is identified, the VAR recommends a review. The referee can view the incident on a pitchside monitor before making a final decision.