Former Premier League referee Peter Walton has explained why Arsenal were not awarded a penalty in their 1-0 win over Chelsea at Stamford Bridge.
Mikel Arteta's side believed they should have been awarded a spot-kick after the ball visibly struck Marc Cucurella's arm on the edge of the Blues' penalty area.
Despite a lengthy VAR check, referee Michael Oliver allowed play to continue as the Gunners hung onto a vital London derby win and returned to the top of the Premier League.