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Professional
6 KOs
3 KOs
Photo: ReinierdeRidder · CC BY-SA 4.0 · Wikimedia Commons
Reinier de Ridder (born September 7, 1990), also known by his initials RdR, is a Dutch professional mixed martial artist. He currently competes in the Light Heavyweight division of the Ultimate Fighting Championship (UFC). He previously competed in ONE Championship, where he is a former ONE Middleweight World Champion and ONE Light Heavyweight World Champion. De Ridder was the third two-division champion in ONE history, having previously held the middleweight and light heavyweight belts simultaneously. As of October 3, 2026, he is #8 in the Meta UFC light heavyweight rankings.
Biography from Wikipedia, available under CC BY-SA 4.0. Shortened. Read the full article.
25 Feb 2022 – 1 Mar 2024
| Result | Date | Opponent | Method | Event |
|---|---|---|---|---|
| W | 22 Aug 2026 |  Roman DolidzeLight heavyweight | TKO · R1 4:01 punches | UFC Fight Night: Hernandez vs. Rodrigues |
| L | 7 Mar 2026 |  Caio BorralhoMiddleweight | UD · R3 5:00 | UFC 326: Holloway vs. Oliveira 2 |
| L | 18 Oct 2025 | Brendan Allen Middleweight | RTD · R4 5:00 corner stoppage | UFC Fight Night: de Ridder vs. Allen |
| W | 26 Jul 2025 |  Robert WhittakerMiddleweight | SD · R5 5:00 | UFC on ABC: Whittaker vs. de Ridder |
| W | 3 May 2025 |  Bo NickalMiddleweight | TKO · R2 1:53 knee to the body | UFC on ESPN: Sandhagen vs. Figueiredo |
| W | 18 Jan 2025 | Kevin Holland Middleweight | SUB · R1 3:31 rear-naked choke | UFC 311: Makhachev vs. Moicano |
| W | 9 Nov 2024 | Gerald Meerschaert Middleweight | SUB · R3 1:44 arm-triangle choke | UFC Fight Night: Magny vs. Prates |
| L | 1 Mar 2024 |  Anatoly MalykhinTitleMiddleweight | RTD · R3 1:16 retirement | ONE 166: Qatar |
| L | 5 May 2023 | Tye Ruotolo Middleweight Submission Grappling | UD · R1 10:00 | ONE Fight Night 10: Johnson vs. Moraes 3 |
| L | 3 Dec 2022 | Anatoly MalykhinTitle Light heavyweight | KO · R1 4:35 punches | ONE on Prime Video 5: de Ridder vs. Malykhin |
| W | 22 Jul 2022 | Vitaly BigdashTitle Middleweight | SUB · R1 3:29 inverted triangle choke | ONE 159: de Ridder vs. Bigdash |
| D | 26 Mar 2022 | André Galvão Middleweight Submission Grappling | PTS · R1 12:00 | ONE: X |
| W | 25 Feb 2022 | Kiamrian AbbasovTitle Middleweight | SUB · R3 0:57 arm-triangle choke | ONE: Full Circle |
