Kade Ruotolo Draws Ex-Champ Ok Rae Yoon for Toughest MMA Test Yet

Kade Ruotolo is about to find out how far pure grappling pedigree can carry him in a cage. The 23-year-old, who already holds the ONE submission grappling belt, returns to ONE Championship on Dec. 18 in Bangkok to face former lightweight champion Ok Rae Yoon at ONE Fight Night 50 — comfortably the stiffest MMA assignment of his young career.

The numbers behind Ruotolo's rise are hard to argue with. He's 4-0 since switching his focus to MMA, all in Asia, with a 100 percent finish rate: three submissions to open his account, then a second-round knockout of Hiroyuki Tetsuka last time out. That last result matters, because it showed he can hurt people standing up, not just drag them to the mat.

Why Yoon Is the Real Test

Yoon is a different animal from anyone Ruotolo has shared a ring with. The South Korean veteran carries 17 wins across 24 professional fights and famously beat Eddie Alvarez and Christian Lee in 2021 on his way to the ONE lightweight title. That's not a name on a highlight reel — that's a man who has solved high-level MMA problems.

The catch is that Yoon arrives in need of a reset. He's dropped decisions in his most recent outings against Alibeg Rasulov and Lucas Gabriel, so this isn't the champion of 2021 so much as a dangerous veteran chasing redemption. For Ruotolo, that cuts both ways: Yoon is beatable, but a cornered former champ with that résumé is exactly the kind of opponent who exposes a prospect's gaps.

Stylistically, this is a clean clash of identities. Ruotolo's whole game funnels toward the submission, where he's generational. Yoon's job is to keep it where he's comfortable, lean on 24 fights of experience, and make the 23-year-old prove he can win when the easy finish isn't there. If Ruotolo forces the tap or lands another clean stoppage, the step-up narrative writes itself.

ONE is leaning into the moment too, with the card set to air in U.S. primetime. Ruotolo isn't the only one in the family with gold on the brain either — brother Tye Ruotolo gets his own title shot on Nov. 6. For Kade, December is about proving the grappling royalty translates against a man who's beaten the best.