Victor Osimhen scored twice as Napoli came from 2-0 down to salvage a 2-2 draw at Leicester, while Lyon cruised to a 2-0 win at Rangers on the opening night of the Europa League group stages.
Earlier, Celtic threw away a two-goal lead to lose 4-3 to Real Betis and West Ham were convincing 2-0 winners away to Dinamo Zagreb.
Leicester just missed out on Champions League football for a second consecutive season as they finished fifth in the Premier League last season.
But the Foxes are keen to go further than their run to the last 32 of the Europa League last season and got off to a great start against the Italian giants.
Ayoze Perez fired home at the back post from Harvey Barnes’ cross after just nine minutes.