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.
Raphinha, Fermin score as Barcelona beat Athletic in home opener
Celtic and Rangers to play cup match behind closed doors after pitch invasion
Chelsea and Fulham reach League Cup third round as Welbeck scores on debut
PSG to meet Barca, Man City as Champions League draw throws up marquee ties
Abbas gives Pakistan slight edge as England battle back at Lord's
