English Premier League campaigners Arsenal beat French champions Paris Saint Germain 2-nil at the Emirates in London in the big game at the start of match day two in the European Champions League today.
Kai Havertz and stand in captain Bukayo Saka scored first half goals to put the Gunners in charge, a lead they held until the end.
Former champions Manchester City also had a relatively easy afternoon after seeing off Slovan Bratislava 4-nil away.
Karim Adeyemi bagged a hatrick for Borussia Dortmund in their 7-1 thrashing of Celtic, Inter Milan were too good for Crvena Zvezda 4-nil, Victory Boniface scored the lone goal as German champions Bayer Leverkusen beat AC Miland of Italy 1-nil.
In other games Robert Lewandowski scored a brace for Barcelona to beat Young Boys 5-nil while VFB and Sparta Prague drew 1-all.