Arsenal enjoyed a 3-0 win in Azerbaijan against Qarabag in the Europa League on Thursday and AC Milan beat Greece's Olympiakos Piraeus 3-1 but Sevilla suffered a shock defeat by Russians Krasnodar, reports Reuters.
Eighteen-year-old Emile Smith Rowe, a product of the Arsenal's academy was on target as a mainly second-string Gunners maintained their winning start in the competition.
Sokratis Papastathopoulos and Matteo Guendouzi also scored for Unai Emery's side who sit atop Group E with six points.
Milan trailed to a Miguel Angel Guerrero goal at the San Siro but a late flurry of goals ensured victory for Gennaro Gattuso's side.
Patrick Cutrone scored twice for the Italians and Argentine Gonzalo Higuain was also on target as Group F side Milan also made it two wins out of two.
Sevilla, winners of the competition three times between 2013 and 2016, went down 2-1 with Georgian midfielder Tornike Okriashvili grabbing the winner two minutes from the end after Nolito had put Sevilla in front.
RB Salzburg came back from a goal down to beat Scotland's Celtic 3-1 in Austria.