Arsenal had to come from behind twice to beat Leicester City 4-3 in a thriller as the Premier League season got off to a flying start on Friday with Arsene Wenger's substitutions turning the match around at The Emirates.
Substitute Aaron Ramsey rifled home to level before Giroud - introduced alongside the Wales global - headed in an 85th-minute victor to settle a breathless encounter in Arsenal's favour.
The Gunners got off to the ideal start, with record-signing Alexandre Lacazette scoring after just 94 seconds, via his his first-ever shot in the Premier League.
Arsenal netted two goals after the 80th minute to down Leicester City in a memorable season opener.
Arsenal looked a beaten team when Leicester led 3-2 early in the second half after Vardy grabbed his second goal before the substitutions gave them new vigour in attack.
The first game of the season already looks like a contender for game of the season.
Vardy has now scored four goals in his last five premier league appearances against Arsenal.
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Sources described the suspect as a French national born in Mauritania, western Africa, who left a psychiatric hospital in July. Monuments in the French capital are occasionally evacuated for security reasons as part of those measures.
Wenger said he gave Giroud the option to leave for another club this summer in search of more regular playing time but was thrilled when the striker made a decision to stay.
"Insecurity goes quickly through a team and we had many experienced defenders out tonight - Koscielny, Mustafi, Mertesacker".
But from the corner, taken by Mahrez, Vardy drifted away from Xhaka and Monreal to glance a header into the far corner.
Giroud sealed the win with a thumping header five minutes from time to seal for the Gunners their first win of the new season.
On the competitiveness of the League season which has just begun, Wenger added, "I don't know how good everyone will be". "I rate him as a player but we have similar types, with Alex Iwobi, Jack Wilshere back, and Mesut Ozil".
"It will be interesting to see how he interacts with Jamie Vardy". Following a short corner on the left, Marc Albrighton's deep cross was headed back across goal by Harry Maguire and Okazaki leapt to nod a header past Petr Cech.
"Going forward and character wise we have been great".