Arsenal youngster Ainsley Maitland-Niles replaced Hector Bellerin at right-back for Sunday's 3-0 Premier League win over Watford.
The Gunners had lost each of their last three league games but returned to winning ways thanks to goals from Shkodran Mustafi, Pierre-Emerick Aubameyang and Henrikh Mkhitaryan.
Maitland-Niles made his Premier League debut in 2014 but had to wait three years to make his first league start.
It's been a shambolic season at the Emirates but the 20-year-old academy graduate - who has mainly played as a left-back - looks set to have a real future at the top.
A central midfielder by trade, Maitland-Niles has been used in a number of different positions by Arsene Wenger this season.
He has excelled wherever he has filled in and Bellerin - who hasn't been at his best this season - might well be worried about losing his spot in the first XI.
Retired Premier League midfielder Danny Murphy was waxing lyrical about Maitland-Niles on Match of the Day 2.
"I actually think he [Maitland-Niles] is going to be a real superstar, this lad," said Murphy on MOTD2.
"He's played in a couple of different positions and he keep impressing me more and more.
"He's playing out of position in these full-back areas - he was at right-back today.
"But he's so naturally two-footed it's unbelievable. Look at his raw power and his intent.
"But his calmness is what Martin [Keown] and I were talking about throughout the day.
"This is Premier League football and no one seems to be able to beat him one-on-one defensively, which is a fantastic quality."
Martin Keown agreed with Murphy on MOTD2 and even suggested that he would've been "more than happy" to play alongside Maitland-Niles at Arsenal.
"I'd have been more than happy to have had him as a right back as a colleague alongside me" said the former Arsenal defender.
"He's answering the call at right-back and Bellerin might be looking at that today and be a bit concerned - because he slotted in beautifully."
Bellerin - who has been sidelined with a knee injury - is in contention to start against AC Milan on Thursday night.
Should Maitland-Niles be given the nod instead of him though? Let us know what you think by leaving a comment below.