But for every top team underperforming, there's an underdog seizing their moment and taking their place. And during this phase, Aston Villa, Lille, Brest, Celtic and Club Brugge certainly rose to the occasion as they all secured unexpected placings in the next round.

American soccer fans can stream every fixture of this season's tournament via Paramount Plus, which has exclusive live English-language broadcast rights in the US for the UEFA Champions League. Paramount Plus has two main subscription plans in the US: Essential for $8 a month and Premium for $13 a month. Both offer coverage of the Champions League.