The Frenchman came off the bench to score a dramatic victor as the Gunners beat plucky Leicester 4-3 at the Emirates. They looked pretty comfortable doing it, and eventually the pressure told, with Danny Welbeck coming free to poke home from short range, right on the stroke of half time.
Vardy scored again in the second half before much-maligned manager Arsene Wenger would make two critical substitutions, bringing in striker Olivier Giroud for Rob Holding and Aaron Ramsey to replace Mohamed Elneny with just over 20 minutes left in the game. It was one of the great days of recent weeks for me because I know how important he is.
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The first week of the season is always one of the hardest to predict, but our writers have a lot of confidence in the top six. However, the club did win the Europa League and the League Cup, giving the manager a platform of success on which to build.
Arsenal got off to the best start possible, with Alexandre Lacazette scoring his first goal in an Arsenal shirt in the Premier League. "Obviously we can build on it from there".
Amid the joy - and relief - of victory, there was nonetheless plenty to concern Wenger, not least the manner in which his side conceded all three goals.
Once they are back and available, Welbeck is hopeful that future results can be earned in less trying circumstances.
Then, as they usually do, Arsenal got it back by the end and pulled out a win.
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Perhaps we've got to ensure that all our players give their all and hope that City are off-colour, but it can happen that way.
"We're gonna win the league!" sang the Leicester fans and they nearly had a third goal to cheer when Okazaki's header from Christian Fuchs's cross bounced just wide of Cech's left-hand post.
He said: "At some stage it didn't look like we'd win". I thought the ball would go out as it was flying over me and suddenly there was a player.
But Wenger said there was now no chance of Giroud leaving before the transfer deadline closes later this month after the player had resolved to fight for his place in the first team at the Emirates Stadium.
The 26-year-old Frenchman averaged a goal every 80 minutes during his Ligue 1 career with Lyon and he's started in fine style.
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Manchester United will kick off their new campaign on Sunday at Old Trafford against West Ham . "He's injured, he needs time to recover".
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