Result · ONE
Ruotolo submits Lee with a rear-naked choke at 2:08 of the first round
He takes the ONE lightweight title in his third MMA fight, and he is the first athlete with world titles in submission grappling and MMA.
ONE · Welterweight champion
Christian Lee
ChampionWelterweight
18–5–01 NCNo contest. The result was voided, so it does not count as a win, a loss, or a draw.
13 KO · 4 SUB · 1 DEC
- Height
- 5′10″178 cm
- Reach
- 76″193 cm
- Weight
- 185 lb84 kg
- Age
- 28
- Born
- June 21, 1998
- From
- Singapore
- Style
- Taekwondo
- Stance
- Orthodox
- Team
- Evolve MMA
- Streak
- 0wins
- Last
- Tye RuotoloLoss · November 6, 2026
Christian Lee is the ONE welterweight champion.
He won the lightweight title back from Ok Rae Yoon at ONE 160 on August 26, 2022. The one defense of that reign was a second-round stoppage of Alibeg Rasulov at ONE 173 on November 16, 2025, and he lost the title to Tye Ruotolo. Their first meeting, on December 7, 2024, was a no contest after an accidental eye poke.
The only decision win is Saygid Guseyn Arslanaliev at ONE: Century on October 13, 2019.
He trains at Evolve MMA, and ONE lists his countries as Singapore and the United States. His parents hold black belts. Angela Lee is his sister and Adrian Lee is his brother, and he earned black belts in Brazilian jiu-jitsu and Total Defense System as a teenager. The 2013 FILA World Championship named him most outstanding athlete after six world titles in Brazilian jiu-jitsu, pankration, mixed martial arts, and submission grappling, and he turned pro in 2015.
Latest news
Fight night · ONE
Ruotolo says he does not want to fight the taxi cab drivers
He challenges Christian Lee for the lightweight title on November 6, in his third professional fight.
Fight night · ONE
Lee says he is getting this one back for his brother
Lee defends the lightweight title against Ruotolo on November 6, and he called a second-round finish by submission. Adrian Lee lost to Ruotolo by rear-naked choke in September 2025.
Fight night · ONE
Lee defends the lightweight title against Ruotolo
Lee is also the welterweight champion, and seventeen of his 18 wins ended inside the distance. Ruotolo is the welterweight submission grappling champion, and he submitted Adrian Lee with a rear-naked choke.
Fights
| Date | Opponent | Result | Method | Round | Time | Event |
|---|---|---|---|---|---|---|
| Tye Ruotolo | Loss | Submission (rear-naked choke)Lost the lightweight title. | 1 | 2:08 | The Inner Circle 37 | |
| Alibeg Rasulov | Win | TKO (knees)Defended the lightweight title. | 2 | 2:32 | ONE 173 | |
| Alibeg Rasulov | No contest | No contestAccidental eye poke. | 2 | 4:55 | ONE Fight Night 26 | |
| Kiamrian Abbasov | Win | TKO (elbows and punches)Won the welterweight title. | 4 | 4:20 | ONE on Prime Video 4 | |
| Ok Rae Yoon | Win | TKO (knees)Won the lightweight title. | 2 | 1:00 | ONE 160 | |
| Ok Rae Yoon | Loss | Decision (unanimous) | 5 | 5:00 | ONE: Revolution | |
| Timofey Nastyukhin | Win | TKO (punches) | 1 | 1:13 | ONE on TNT 2 | |
| Iuri Lapicus | Win | TKO (punches) | 1 | 2:19 | ONE: Inside the Matrix | |
| Saygid Guseyn Arslanaliev | Win | Decision (unanimous) | 3 | 5:00 | ONE: Century | |
| Shinya Aoki | Win | TKO (punches) | 2 | 0:51 | ONE: Enter the Dragon | |
| Edward Kelly | Win | TKO (punches) | 1 | 2:53 | ONE: Eternal Glory | |
| Kazuki Tokudome | Win | TKO (punches) | 1 | 3:07 | ONE: Heart of the Lion | |
| Edward Kelly | Loss | DQ (illegal suplex) | 1 | 2:19 | ONE: Beyond the Horizon | |
| Martin Nguyen | Loss | Decision (split) | 5 | 5:00 | ONE: Unstoppable Dreams | |
| Kazunori Yokota | Win | Submission (guillotine choke) | 2 | 4:34 | ONE: Visions of Victory | |
| Kotetsu Boku | Win | KO (slam) | 1 | 3:24 | ONE: Warriors of the World | |
| Keanu Subba | Win | Submission (triangle armbar) | 3 | 1:11 | ONE: Quest for Greatness | |
| Wan Jianping | Win | TKO (elbows and punches) | 1 | 4:50 | ONE: Kings of Destiny | |
| Martin Nguyen | Loss | Technical Submission (guillotine choke) | 1 | 4:30 | ONE: Heroes of the World | |
| Rocky Batolbatol | Win | TKO (punches) | 1 | 2:14 | ONE: Kingdom of Champions | |
| Cary Bullos | Win | Submission (brabo choke) | 1 | 2:07 | ONE: Ascent to Power | |
| Anthony Engelen | Win | TKO (punches and elbows) | 1 | 4:14 | ONE: Union of Warriors | |
| Mahmoud Deab Mohamed | Win | Submission (kimura) | 1 | 2:20 | ONE: Clash of Heroes | |
| David Meak | Win | KO (punches) | 1 | 0:29 | ONE: Spirit of Champions |