Arsenal made it two wins from two in the Premier League International Cup thanks to a late goal from Tyreece John-Jules in a 3-2 win over Dinamo Zagreb.
The Croatian team had taken the lead through Antonio Marin before Arsenal fought back with goals by John-Jules and James Olayinka.
Dynamo's Roko Baturina levelled with 11 minutes remaining but John-Jules had the last word with his second goal of the evening to send Arsenal to the top of Group A on six points.
That means the Gunners are three points clear of Dinamo, who have also played twice, and second-placed Leicester, who have a match in hand, and can only be edged out of the two qualification spots on goal difference if results go against them.
See: Arsenal report
Also in Group A, Leicester City won their opening match of the competition. They beat Villarreal 2-1 thanks to goals by George Hirst and Josh Eppiah.
See: Leicester report
Brighton & Hove Albion missed out on qualification for the quarter-finals after they were held to a goalless draw by Valencia in Group B, leaving them five points adrift of the top two with one match left.
See: Brighton report