However, there was one more twist in the tale as Olivier Giroud came off the bench to snatch a victor in the 86th minute as his header from a late corner came off the bar and dropped over the line to secure Arsenal a dramatic 4-3 win.
Substitute Aaron Ramsey rifled home to level before Giroud - introduced alongside the Wales worldwide - headed in an 85th-minute victor to settle a breathless encounter in Arsenal's favour.
Lacazette is simple in every game.
Lacazette is the seventh Arsenal player to score on his first Premier League appearance.
"I don't want him to go. He's a collective player and an intelligent player".
Arsenal leveled the score minutes before halftime when Danny Welbeck received a tap in after an odd scuffle in Leicester's box.
The impressive Vardy scored his second in the 53rd minute to put Leicester in front once more, curling Riyad Mahrez's corner into the bottom far corner amid poor Arsenal marking.
Well if you were a manager and you would be on the bench when you're 3-2 down with 20 minutes to go, and you win 4-3, you're more happy than concerned.
"To win like we did will only strengthen it and overall we have good ingredients in the squad and it is a good opportunity again to show it away from home". "With a bit of work we can get that out of the system".
After that, though, Leicester City had the Gunners on the ropes for most of the game, taking a 3-2 lead in the second half off of Jamie Vardy's second goal of the match.
That Wenger is not going into the new campaign with the fans still at his throat owes much to Arsenal's strong finish to last season.style="text-align: center;"