Napoli coach Walter Mazzarri admits Juventus' lack of European football is an advantage to them in the title race.
The two teams meet today.
The Bianconeri have an advantage in that they do not have European commitments, while Napoli are fresh from a 3-2 defeat to Bayern Munich at the Allianz Arena.
"Andrea Pirlo explained a while back how much energy the Champions League takes away from you. We have lost many times without deserving to, while in others we didn't play as well and still got the result.
"It's not that we prefer the Champions League, but after having done so much to earn this opportunity, we can't go around embarrassing ourselves. It is our duty to play it well.
"I'm proud to have brought Napoli back to the Champions League after so many years."