Napoli maintained their one-point advantage at the top of Group C with a 3-1 win over Red Star Belgrade on Wednesday.   Marek Hamsik opened the scoring for Napoli on 11 minutes before Dries Mertens scored twice to secure victory. El-Fardou Nabouhane struck in the second half for Red Star Belgrade, who remain bottom. Liverpool  must beat  Napoli  1-0 or by a two-goal margin to advance following a 2-1 defeat against  Paris Saint-Germain  in Group C. Juan Bernat and Neymar gave Paris Saint-Germain a 2-0 lead after 37 minutes before James Milner pulled a goal back from the penalty spot on the stroke of half-time. Liverpool suffered a third successive away defeat in the competition this season. Lionel Messi scored a record 106th Champions League goal for a single club as  Barcelona  beat  PSV Eindhoven  2-1 to confirm top spot in Group B. Messi struck a stunning opener in the 61st minute just when frustration seemed to be building for Ernesto Valverde's team. Li