ONE Fight Night 38 Recap
Submission Stars Shine and Grappling Takes Center Stage
ONE Fight Night 38 wrapped up the 2025 U.S. primetime calendar with exactly the kind of chaos fans hope for at the end of the year. The event delivered everything from a shocking title upset in MMA to a historic passing of the torch in submission grappling.
But make no mistake. This card belonged to the grapplers.
Below is a full breakdown of every match.
Flyweight Submission Grappling World Championship
Diogo Reis def. Daiki Yonekura by unanimous decision
Diogo Baby Shark Reis looked every bit like a man at the top of the sport. From the opening grip fight, he controlled tempo and distance, slicing into leg entries and forcing Daiki Yonekura to defend constantly.
Reis passed, backed out, re entered, and kept Yonekura stuck between hesitation and reaction. Even when Daiki threatened with a brief K guard inversion, Reis immediately shut it down and floated into dominant passing positions.
No huge finish in this one, but a masterclass in pressure passing and positional control that left no question on the scorecards.
Lightweight Submission Grappling
Lachlan Giles def. Marcelo Garcia by kneebar at 7:03 of round one
This one carried the emotional weight of an era. Marcelo Garcia stepping under the lights again felt like watching a living chapter of jiu jitsu history walk into the present day. Across from him stood Lachlan Giles, the leg lock tactician whose technical evolution was shaped, in part, by Marcelo’s generation.
Marcelo opened with his trademark collar ties and arm drag attempts, showing flashes of the movement that made him a phenomenon. Lachlan respected the pocket but refused to overcommit, keeping Marcelo at a range where the front headlock threats never fully materialized.
Once they hit the mat, Giles wasted no time. He entered the legs with purpose, transitioned to a tight entanglement, and forced Marcelo into a defensive roll. From there it was all mechanics and patience. Giles extended into a clean kneebar for the finish.
And in the post fight interview, Lachlan did what only Lachlan would do. He casually named the finishing sequence “the Lachy Lock.” The crowd loved it, Marcelo laughed, and a new entry was added to the global grappling vocabulary.
A respectful passing of the torch, sealed with a signature move.
Hayabusa Fightwear Inc.