Atletico Madrid 6-0 Celtic: Diego Simeone’s men cruised to a comfortable six-nil victory after the visitors had a player sent off.
Celtic found themselves in a dire situation as Daizen Maeda received a red card for a nasty challenge.
Before Maeda’s expulsion, Celtic was already behind due to Antoine Griezmann’s goal, which was deflected.
Atletico Madrid took full advantage of their numerical superiority, delivering a breathtaking second-half performance.
Alvaro Morata and Antoine Griezmann each scoring twice, while Samuel Lino and Saul Niguez also found the net.