Chelsea manager Frank Lampard said that Video Assistant Referee (VAR) "changes the atmosphere" of matches after his side saw a goal disallowed in their 2-1 loss to league leaders Liverpool on Sunday.
Down early against Liverpool at Stamford Bridge, the Blues initally thought they had an equaliser from Cesar Azpilicueta was ruled out by VAR after Mason Mount was adjudged to be offside in the build-up.
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Liverpool then hit the Blues with a second goal by Roberto Firmino and while N'Golo Kante pulled a goal back in the second half, Chelsea were unable to find the second they needed.