Ivanovic insists no talk about changing Chelsea's attacking style
Some have questioned whether Villas-Boas' attacking philosophy has made Chelsea too open.
Ivanovic said: "He hasn't asked us to change something defensively.
"Defence is simple. You have to be better than your opponent, to show more wish to win every tackle in every game.
"Of course we are playing more attacking football, but to lose a game 5-3 at home, it's a defensively poor game."