Barcelona star Lionel Messi scored his 37th club hat trick while Arsenal playmaker Mesut Ozil netted the first trio of goals of his career.
Leicester defender Danny Simpson has insisted the Foxes can recreate last season's stunning form and dismissed criticism over their title defence.
Celtic defender Kolo Toure has accepted the blame for his side's 2-0 Champions League loss to Borussia Monchengladbach on Wednesday.
Arjen Robben and Joshua Kimmich both nodded home goals as Bayern Munich sealed their 14th Champions League home win in a row in a 4-1 defeat of PSV.
Barcelona goalkeeper Marc-Andre ter Stegen has backed Claudio Bravo to bounce back from his poor display in Manchester City's 4-0 loss.
Pep Guardiola refuted claims that Manchester City's 4-0 defeat to Barcelona at Camp Nou on Wednesday was his worst loss ever.