Giroud then sent the previously despondent Arsenal fans wild when he headed the victor from a corner, Leicester keeper Kasper Schmeichel only managing to turn the ball onto the underside of the bar before it bounced over the line.
Arsenal record-signing Alexandre Lacazette launched his English league career in style by heading in the opener after 94 seconds. Even people will say we conceded three goals, yes, but we scored four as well and the game was of quality.
"But I don't want him to go".
That goal should have been the one that woke Arsenal up and given them the need to take control and run away with the game, but, instead, it was Vardy who struck again to give Leicester the lead back in this back-and-forth game.
But Leicester couldn't resist a relentless final 15 minutes from Wenger's side, and Giroud's win was a cruel blow to a side that had offered so much to an exhilarating 90 minutes.
"We know defensively we can do better but overall we produced a top-quality game". "We had 27 attempts and they had three on target and three goals, but it's something we have to work on".
The Gunners look strong as they are coming off the Community Shield win over Chelsea at Wembley while Leicester has also played well in preseason training matches.
Both teams will look to forget their dismal performances last season as Arsenal dropped out of the Top 4 after 20 successful seasons of staying at the top and Leicester remained at 12th place, out of the top 10.