Mikel Arteta's team had won five of their last six games in all competitions, but a weak starting lineup resulted in a weak result.
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If this was not an entirely perfect day for Frank Lampard - Kepa Arrizabalaga made another error to allow the visitors to halve the deficit before the interval whilst out of form Timo Werner missed a penalty - it was a welcome respite for the Chelsea manager, who has seen his side lose five of their last eight Premier League games.