Jack Wilshere scored twice in a game for the first time to give Arsenal a 2-0 victory over Marseille, keeping the Group F leaders on course to qualify for the Champions League knockout phase for the 14th successive season.
The midfielder took just 29 seconds to put Arsenal in front after completing a lightning break against the bottom-place visitors.
Despite controlling the game, the Gunners squandered a string of chances including a missed penalty by Mesut Ozil and couldn't find the net again until the 65th minute when Wilshere tapped in his second.
Going into the final round of matches, Arsenal has a three-point lead over Borussia Dortmund and Napoli after the German side won 3-1 in the other Group F game.
Ten-man Ajax held on for a shock 2-1 win over Barcelona to keep alive its hopes of qualifying for the knockout stage of the Champions League.