Eberechi Eze's Arsenal career had gone into something of a dip since he made himself a hero with that treble against Spurs in December – but what a time for the 27-year-old England forward to bounce back to his best.
Since that hat-trick, Eze had featured in all 15 of Arsenal's subsequent league games, but had made only four starts and played 360 minutes before this derby.
And, under the watchful eye of England head coach Thomas Tuchel, he delivered a reminder of his quality with perfect timing, just when Arsenal needed it most.
The pressure was on the Gunners after that Molineux slip, with Manchester City scenting blood and Arsenal's nerve under pressure being questioned once more.
The fact that the examination came at Spurs who, despite their struggles, had new manager Tudor on the sidelines, made the assignment potentially more hazardous.
Arsenal were set back when Spurs equalised, but this was a calm and highly-competent display which will be even more pleasing for Mikel Arteta with Gyokeres, who has had his critics, adding two fine finishes of his own.