Outside Red Bull Arena, the clinks of Coronas, a blaring Bad Bunny track and the anxious frenzy of juggling circles score the dusk.
Inside, a sprite with copper-tinged hair skates around his contemporaries in hot-pink cleats: Sporting Kansas City midfielder Gianluca Busio, still weeks shy of his 19th birthday.
Sporting KC boss Peter Vermes had an edict for "Bus" (his nickname, pronounced "Boose") at a practice earlier in the week: "Cause havoc." It's something of a mantra for the wunderkind from Greensboro, North Carolina.
"I didn't have stuffed animals, I had little soccer balls," Busio tells ESPN about his childhood.