The Champions League is back - and the referee for Chelsea vs Zenit will be Bartosz Frankowski.
Frankowski is Polish and officiates in the Ekstraklasa. He has been a FIFA referee since 2014 and is ranked as a UEFA first category referee; Frankowski is well-thought-of by UEFA and was selected as a support match official for Euro 2020, where he acted as a fourth official during the tournament.
The other officials for this game are also Polish. Marcin Boniek and Jakub Winkler will be running the line as assistant referees, while the fourth official for the match is Krzysztof Jakubik.
German Marco Fritz is tasked with being the Video Assistant Referee for the match, while Italian Marco Di Bello is the Assistant Video Assistant Referee for the game.
UEFA stipulates that every single stadium in the Champions League has to provide a VAR room for the officials in charge of the system. The main VAR official has to be from the same country as the on-pitch referee - if the league of that nation utilises the technology domestically.
Incident off the pitch or in the tunnel can also be watched by VAR - and VAR can award added time in matches.
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