Kylian Mbappe has a new squad nickname to show for the mesmerising performance that propelled him into the global spotlight and took France into a World Cup quarter-final at Argentina's expense.
The French players are calling him '37' after TV graphics clocked a top speed of 37kmh (a fraction less than 23mph) in his searing sprint beyond Javier Mascherano and Marcos Rojo, which secured a penalty to send them on their way.
While FIFA's official statistics show that Mbappe was actually running at 32.4kmh, it doesn't sound like a name that will stick anyway. Though it's a necessary upgrade on 'Kiki', the affectionate term of endearment coined by Antoine Griezmann. Mbappe has demonstrated that he is no longer the kid brother of the team.
Kylian Mbappe speeds away from Javier Mascherano during France's victory over Argentina
In netting a brace, Mbappe demonstrated that he is no longer the kid brother of France's team
The French media was busy consulting sprint specialists on Sunday for an understanding of how the player can find speeds like he did with the ball at his feet.
Stephane Caristan, the nation's 110m European hurdles champion, said Mbappe's pelvic position was a significant factor.
The teenager's team-mates are nowhere near as breathless about what they saw in the Kazan Arena on Saturday, including two ice-cold finishes in eight second-half minutes.
Asked in the aftermath if Mbappe's acceleration past the Argentinians had surprised him, French captain Hugo Lloris blew out his cheeks and laughed.
'No, I'm not surprised,' he said. 'I see it every day. His natural strength is his speed. If he has space he can kill teams.'
Mbappe might have become a Chelsea player eight years ago. Nurtured by his Cameroonian father Wilfried at the small Bondy club he helps run in the Paris suburbs, he was invited to a week-long trial in west London as an 11-year-old.
France captain Hugo Lloris (centre) said of the forward: 'If he has space he can kill teams'
But he failed to score in a team which