Gabriel Martinelli starred for Arsenal as they beat Standard Liege in the Europa League.
The teenage striker found the back of the net twice in the 4-0 victory at Emirates Stadium.
The Gunners are now at the top of Group F with two wins from two games.
Meanwhile, Manchester United’s struggles continued as they were held to a goalless draw against AZ Alkmaar.
It means that Ole Gunnar Solskjaer’s side are winless in their past 10 away games.
Elsewhere Young Boys beat Rangers 2-1 while Feyenoord got the better of FC Port 2-0.