The 27-year-old posted a picture of his teammates celebrating the win in the dressing room after the game along with the caption, “best. team.”
Leicester City took the lead in the first half when Jamie Vardy scored his 19th goal of the season from the penalty spot.
Theo Walcott equalised for the Gunners midway though the second half. Arsenal had to wait until the fourth minute of additional time to score the winner. Ozil delivered a pinpoint set-piece ball that found the head of Welbeck who was playing his first game of the season.
Ozil provided his 17th Premier League assist in the process – the highest figure in the league.
Arsenal moved two points within leaders Leicester City following their victory over the Foxes.