Five things we learned from Champions League: PSG's depth too much for Barca; Rio Ngumoha key for Liverpool?

Paris Saint-Germain secured an important Champions League victory over Barcelona, with PSG's squad depth proving to be a decisive factor in the match. Elsewhere across Europe, other players made notable individual impressions in their respective Champions League fixtures. Young Liverpool player Rio Ngumoha also emerged as a talking point following the midweek action.