Ten minutes after the break, the England worldwide struck again as he raced in unmarked to head home Riyad Mahrez's corner to put Shakespeare's side in control - before Arsenal netted twice in the final 10 minutes to win the contest.
The Frenchman saved the day as he popped up to score the victor on the 85th minute - just 18 minutes after being introduced for Mohamed Elneny.
The 28-year-old watched from the stands as Olivier Giroud's late header earned the Gunners three points. "In the end he chose to stay and it was one of the great days of the recent weeks for me". Because I know how important he is, not only as a player - he is a fantastic player - but as well in the group.
"I'm happy the goals we conceded we can work on together". "Top quality game and you want PL to be best in the world and you have to produce games like that", Wenger told reporters.
'He is loved here and we are very happy he chose to stay'.
Wenger revealed after the win that he offered Giroud the chance to leave the club this summer, but that the striker opted to stay, much to the delight of the manager.
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Typical Arsenal though, they conceded an equaliser just three minutes later when Harry Maguire headed back across goal excellently for Shinji Okazaki to nod home past a hapless Peter Cech.
Ahead of the Leicester City fixture, Arsenal had only won their first fixture of the season once in the last six season, and this gives added importance to their victory. As a game is in 90, that would guarantee you a goal.
Giroud, who had a hard time getting into the starting XI last season as Wenger preferred to play Alexis Sanchez as the lone striker, has been vocal in his desire to play more games from start.
In yesterday's early game, Watford defender Miguel Britos scrambled in a stoppage-time equalizer to grab a 3-3 draw against Liverpool in an absorbing encounter.
He said: "At some stage it didn't look like we'd win".
"After that, we get the efficiency".