It was far from comfortable at the end but Arsenal have successfully cleared another high hurdle in their bid to win a first Premier League title in two decades.
At Tottenham on Sunday, as so often this season, it was the Gunners' innovation at set-pieces that made the crucial difference.
Set-piece coach Nicolas Jover was deservedly at the forefront of touchline celebrations as Arsenal scored twice from corners.
They required a needed a helping hand for the first, with Pierre-Emile Hojbjerg heading past his own goalkeeper, the second was clearly off the training ground as Kai Havertz nodded home.
Jover joined Mikel Arteta in leading Arsenal's celebrations after both, a rightful appreciation of his role in transforming the team's effectiveness from such situations.
They have scored more goals from set-pieces than any other Premier League side this season and the Havertz goal was their 16th from a header, equalling their Premier League record for a season.
No wonder Sky Sports co-commentator Gary Neville said: 'It's been the same Arsenal set-up all year and it's been good all year.
'He's a little nuisance that set-piece coach, but he's damn good!'
Jover, 42, has definitely become Arteta's secret weapon this season as they dare to dream of ending their long wait for title success.
He made the headlines back in October when Manchester City's Kyle Walker appeared to snub a handshake from Jover after Arsenal beat them at the Emirates.
There is history there because Jover worked in the same role for Pep Guardiola at City between 2019 and 2021, before linking up again with Arteta at Arsenal.
Now both are going up against their old employer in a gripping title race.
Berlin-born Jover began his career as a video analyst at French club
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