• Promotion: ONE Championship
• Title: “ONE on TNT 4″
• Venue: Singapore Indoor Stadium, Kallang, Singapore
• Date: April 27, 2021 (U.S.) / April 28, 2021 (Singapore)
• Number of bouts: 6

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FIGHT CARD

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FACEOFFS

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COUNTRIES REPRESENTED 

1. Australia: Courtney Martin
2. Belarus: Ekaterina Vandaryeva, Kirill Grishenko
3. Japan: Shinya Aoki
4. Myanmar: Aung La N Sang
5. Netherlands: Reinier de Ridder
6. Philippines: Eduard Folayang
7. Senegal: Oumar Kane
8. South Korea: Ok Rae Yoon
9. USA: Colbey Northcutt, Jackie Buntan, Eddie Alvarez

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FIGHT RESULTS

1. Colbey Northcutt (USA) vs Courtney Martin (Australia)

• DIVISION (SPORT): Catchweight (60.6 kg) (MMA)
• REFEREE: Mohamad Sulaiman
• WINNER: COLBEY NORTHCUTT
• METHOD: Submission via Armbar
• TIME AND ROUND: 2:28 of Round 1

2. Jackie Buntan (USA) vs Ekaterina Vandaryeva (Belarus)

• DIVISION (SPORT): Strawweight (Muay Thai)
• REFEREE: Olivier Coste
• WINNER: JACKIE BUNTAN
• METHOD: Majority Decision
• TIME AND ROUND: 3:00 of Round 3

3. Eduard Folayang (Philippines) vs Shinya Aoki (Japan)

• DIVISION (SPORT): Lightweight (MMA)
• REFEREE: Mohamad Sulaiman
• WINNER: SHINYA AOKI
• METHOD: Submission
• TIME AND ROUND: 4:20 of Round 1

4. Oumar Kane (Senegal) vs Kirill Grishenko (Belarus)

• DIVISION (SPORT): Heavyweight (MMA)
• REFEREE: Olivier Coste
• WINNER: KIRILL GRISHENKO
• METHOD: Technical Knockout
• TIME AND ROUND: 5:00 of Round 2

Co-Main Event

5. Eddie Alvarez (USA) vs Ok Rae Yoon (South Korea)

• DIVISION (SPORT): Lightweight (MMA)
• REFEREE: Mohamad Sulaiman
• WINNER: OK RAE YOON
• METHOD: Unanimous Decision
• TIME AND ROUND: 5:00 of Round 3

Main Event

6. Aung La N Sang (Myanmar) vs Reinier de Ridder (Netherlands)

• DIVISION (SPORT): ONE Light Heavyweight World Championship
• REFEREE: Olivier Coste
• WINNER: REINIER DE RIDDER
• METHOD: Unanimous Decision
• TIME AND ROUND: 5:00 of Round 5