Not bad for a £6million snip who not that much was expected of so soon following his summer arrival from Brazilian fourth tier side Ituano.
While £72m club record signing Nicolas Pepe has struggled to make an impact and Mesut Ozil is now struggling to get a game, Gabriel Martinelli is dishing out lessons in how to make yourself an instant fans’ favourite.
The forward opened the scoring after just 12 minutes with a sublime header from inside the area after a cross from Kieran Tierney, beating his marker to the ball at the near post before beating goalkeeper Vanja Milinkovic-Savic.
Not content with the one goal, Martinelli would double his tally just minutes later, this time curling a shot in the far corner after a low cross from Reiss Nelson and some fancy footwork to shake off his direct opponent.
Liege never recovered from that early blow and Arsenal made it three midway through the first half when Joe Willock added his name to the score sheet.
Martinelli was unfortunate not get his hat-trick after the break as he went close on more than one occasion, but there was another highlight to come as he set up Dani Ceballos’ first Arsenal goal with an intelligent run and cross to eventually make it 4-0 to the hosts.
The versatile attacker will likely be condemned to the bench once more when Bournemouth visit north London on Sunday, but there is no shame in playing second fiddle to a player like Aubameyang at this stage.
If he keeps up his development and continues to take his chances, there is no doubt he will get plenty of playing time as the season goes on. And Nketiah’s absence no longer seems to be so much of a problem now after all.
ARSENAL: (4-3-3) Martinez 7.5; Bellerin 7, Mustafi 7, Holding 7, Tierney 8.5; Ceballos 7, Torreira 6.5, Willock 7.5 (Guendouzi 74); Maitland-Niles 6.5 (Pepe 65, 6), Martinelli 9, Nelson 8 (Aubameyang 80)
SUBS NOT USED: Leno (GK); Chambers, Kolasinac, Xhaka
GOALS: Martinelli (13, 16), Willock (22), Ceballos (57)
BOOKINGS: Bellerin (86)
COACH: Unai Emery 8
STANDARD LIEGE: (4-4-2) Milinkovic-Savic 6; Vojvoda 6, Vanheusden 5, Laifis 5, Gavory 5; Boljevic 5 (Carcela 58, 5), Bastien 5, Cimirot 5, Mpoku 6; Lestienne 5 (Amallah 80), Emond 4.5 (Avenatti 74, 6)
SUBS NOT USED: Bodart (GK); Goreux, Lavelee, Fai
BOOKINGS: M’Poku (41), Vojvoda (86)
COACH: Michel Preud’homme 4
REFEREE: Sandro Scharer (Switzerland)
MAN OF THE MATCH: Gabriel Martinelli (Arsenal)
VENUE: The Emirates Stadium