The 19-year-old’s first action was to leave something on Martin Ødegaard and not long after that, he did the same to Havertz.
Mac Allister raged toward the end of the fixture after Ødegaard won a free-kick, while Liverpool ultimately ran out of attacking ideas as the second half progressed.
Havertz netted his first goal in ten appearances to provide the crucial difference, while Arsenal relied on their capacity to control and frustrate their opponents.
The home crowd expressed ongoing indignation throughout the match as supporters grew frustrated when visiting players went to ground, leading to animated protests over free-kicks.
Arsenal secured a victory against Liverpool as Kai Havertz scored a close-range finish to decide the match.
The win ended Liverpool’s five-match winning streak across all competitions and showcased the champion know-how Arsenal accumulated last season.
It was a game when Arsenal showed their ruthless side and all of the champion know-how that they accumulated over the course of last season.
Kai Havertz’s first goal in ten appearances proved the difference but, really, the victory was rooted in Arsenal’s capacity to control and frustrate.
Arsenal’s previous trip to the north-west had ended badly on Tuesday night with the Carabao Cup humiliation at Fleetwood.
There was uproar every time that Arsenal won a free-kick, Mac Allister raging after Ødegaard bought a cheap one towards the end.