Chelsea's game against Dinamo Zagreb will be partly officiated by robots after new semi-automated VAR additions were implemented into the Champions League.
The decision, which was announced in July, will attempt to stop some of the controversy over the video assistant, and will be used in competitive action in the wake of torrid criticism that VAR has had following high-profile mistakes in the Premier League at the weekend.
Chelsea themselves were involved in one such incident in their 2-1 win over West Ham, and whilst the new Champions League VAR won't be able to change more subjective decisions like Jared Bowen's alleged foul on Edouard Mendy, it will be able to quickly decipher offside calls that have previously taken time away from matches and stunted the atmosphere for celebrating fans.