Germany Bundesliga 2

Liverpool begins Champions League defense at Napoli

DORTMUND, Germany (AP) Defending champion Liverpool and Barcelona open their Champions League campaigns with difficult away games on Tuesday as Europe's top club competition returns.

Liverpool travels to Napoli, where it lost in the group stage last season, while Barcelona visits Borussia Dortmund as the Spanish giant renews its search for a first European title since 2015.

Last season's surprise semifinalist Ajax is also in action, playing Lille at home, while Europa League champion Chelsea welcomes Valencia to Stamford Bridge.