UFC title challenger Kai Asakura once had a barnburner on the street with his older brother, which forged his path to UFC 310.

UFC 310 (pay-per-view, ESPN 2, ESPN+) takes place Saturday at T-Mobile Arena in Las Vegas. “Countdown” goes behind the scenes with the two fighters, and you can watch the full segment above. And don’t miss the entire episode in the video below. For more on the card, visit MMA Junkie’s event hub for UFC 310.

Since dethroning Brandon Moreno last year, Pantoja has defended his UFC flyweight title twice, once in his native Brazil, where Pantoja headlined UFC 301 earlier this year against an unlikely opponent in Steve Erceg,