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Diogo Reis

DIOGO REIS

"Baby Shark"

3-0100% win rate

FIGHTER IDENTITY

ONE Championship

Organization

ONE
BRA

Nationality

Brazil

Birth

20/03/2002 (24)

Birthplace

Manaus

Brazil

Sport / Status

Submission Grappling · Active

Weight class

flyweight

Height

166 cm (5'5")

ONE Championship record

3-0

Biography

Diogo Reis is a Brazilian jiu-jitsu black belt athlete and submission grappler. He currently competes in the Flyweight division of ONE Championship , where he is the current Flyweight Submission Grappling World Champion . [ a ] A competitor since childhood, Reis is a European Open , Brazilian Nationals , Pan and World Champion in the juvenile and lower belt divisions, completing an IBJJF Grand Slam in 2019. Reiss is a two-time champion at the ADCC Submission Fighting World Championship . Reis was born on 20 March 2002 in Manaus, Brazil . Reis started training in Brazilian jiu-jitsu in 2012 after his brother took up the sport. He joined Melqui Galvao as a yellow belt in 2015 earning all his belts from him through the coloured belt divisions then the adult ones; getting promoted to black belt on 13 December 2020, 7 months only after his brown belt grading.

WIN BREAKDOWN

3 total fights · 0% KO rate

KO/TKO0 (0%)
Decision2 (67%)

Fight history (3)

Win
vs Yuki TakahashiUnanimous Decision (R1)ONE Fight Night 43: Tang vs. Gasanov on Prime Video — 16/05/2026
Win
vs Daiki YonekuraUnanimous Decision (R1)ONE Fight Night 38: Andrade vs. Baatarkhuu on Prime Video — 06/12/2025
Win
vs Shoya IshiguroSubmission (R1)ONE Fight Night 29: Rodrigues vs. McManamon on Prime Video — 08/03/2025