This week's All Star Game was the final test run of video review before Major League Soccer implements Video Assistant Referee in a competitive environment this weekend. MLS joins the Autralian A-League as the first top flight leagues to trial the system, having held an offline trial since the start of the year. The German Bundesliga and Italy's Serie A will both adopt the technology when their seasons commence in two weeks time. If you have an hour to spare, I would highly recommend watching the VAR seminar hosted by former Premier League referee, Howard Webb.
If you don't have an hour , but perhaps two minutes, we have a simple walkthrough of the incident in Montreal, where Christian Colman appeared to score his first MLS goal.