Branislav Ivanovic accepts stuttering Premier League champions Chelsea need to raise their game, but is convinced one win can provide the spark to kickstart their campaign.

Chelsea's dismal start to their league title defence continued as a Steven Naismith hat trick sent them crashing to a 3-1 defeat at Everton on Saturday.

The result left Jose Mourinho's men with just four points from five games and reflecting on a third defeat in their last four outings.