The Gunners left it late to beat Leicester City 4-3 in the opening day of the 2017-18 English Premier League at the Emirates Sports Stadium on Friday
Lacazette opened his Premier League goal account when he scored with less than a minute into the game from a header, but Okazaki drew the visitors level.
Jamie Vardy put Leicester City in the driving seat, but Arsenal came on level pegging on the stroke of half time.
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Before Jamie Vardy restored Leicester City's lead with a brilliant header after the interval.
Arsene Wenger made two quick changes by introducing Aaron Ramsey and Olivier Giroud and it paid off when the former got the equaliser, before the latter scored the match winner in the late minutes.