Di Matteo says Chelsea has to tighten defense

Roberto Di Matteo has hinted strongly Chelsea may abandon its attacking style in favor of a more defensive mentality after its 2-1 loss at West Bromwich Albion.

The Chelsea coach is concerned by his team's slump in form after seeing the European champion take just two points from four games and relinquish top spot in the Premier League.

And with a crucial Champions League game against Juventus in Turin on Tuesday followed by a Premier League meeting with Manchester City at Stamford Bridge next weekend, Di Matteo says it is time to tighten up.