Defending European champion Liverpool slipped to a 1-0 defeat at Atletico Madrid, while Borussia Dortmund earned a 2-1 win at home over PSG as the Champions League knockout stage got underway with a pair of first legs in the round of 16 on Tuesday.
Saul Niguez scored the goal early for Atleti, while 19-year-old Norwegian Erling Braut Haaland scored twice in an eight-minute span in the second half to put Dortmund in front.
Atletico has never lost a game in which Saul has scored, and that record was maintained after the midfielder jabbed Atletico ahead after four minutes.