Substitute Pierre-Emeric Obamyang scored two goals in three minutes to keep Arsenal ahead of a 3-1 win at Leicester City in the Emirates Premier League.
Leicester began to meet better and Ben Chilluel scored the first goal after a ball collided with Arsenal defender Hector Blerin and turned towards goalkeeper Bernd Lino in the 31st minute.
But Arsenal improved after that and Massoud Ozil managed to equalize with a fantastic low shot with his left foot hit the post and then settled the net.
Obamyang then grabbed the limelight after coming down in the 61st minute to extend Arsenal's win for the 10th consecutive game in all competitions.
The Gabon striker scored in the empty goal after receiving the cross-passers Blerin in the 63rd minute and completed another attack after a dazzling display from Ozil in the 66th minute.
Arsenal will host Crystal Palace on Sunday after struggling Sporting in Lisbon on Thursday.
