Victory for Emery's men would lift them above Chelsea into third.
And according to the laws of the game, the forward remained on-side as the move progressed by ensuring that he stayed behind the ball as the following image shows.
The first thing is that the Premier League is the first competition for us because it is giving us the big regularity in the season. It was a slightly odd game, one that Arsenal dominated for long periods and yet one which Liverpool had enough clear-cut chances to have won fairly comfortably.
Arsenal accounted for nine of those and that was an accurate reflection of their impressive play, particularly in midfielder, where Granit Xhaka and Lucas Torreira were excellent.
The draw took Liverpool one point clear in the standings before second-place Manchester City hosts Southampton on Sunday.
Unai Emery sent on Alex Iwobi on 68 minutes, and the Nigerian worldwide eventually set up Arsenal's equaliser, with Lacazette turning past a stranded Alisson before producing a fine finish. Speaking in the post-game conference, Unai Emery said, "We wanted to win but the performance is good, we push and we work the match, doing our tactics and with our supporters pushing us with energy".
"It's already a phenomenal partnership", the former England worldwide said on BT Sport. "It's a point, that will always be a success at Arsenal".
Liverpool forward Sadio Mane had a first half goal incorrectly ruled out for off-side, with Klopp bemoaning that decision as he met the media. Arsenal still need to eradicate those defensive weaknesses completely before they can start winning games like these.
This is not to downplay Wenger's own achievements at Arsenal but sometimes change is needed. Since losing the first two games of the season against Manchester City and Chelsea, a tough start for any new manager, Arsenal have quietly built confidence and momentum and went into this game on the back of a 13-game unbeaten run.
As the final whistle sounded on this superb spectacle, Arsenal's supporters acclaimed their players and radiated warmth as opposed to the ice-cold atmosphere that hung over much of last season.
It is very early days.