Christian Lee

Christian Lee (, , born June 21, 1998) is a Canadian-born American mixed martial artist who currently competes in the lightweight and welterweight divisions of ONE Championship. He is the current and two-time ONE Lightweight World Champion, as well as the current ONE Welterweight World Champion. Concurrently holding both belts simultaneously, Lee is the fourth two-division champion in ONE history and holds the promotion's records for most wins (17), most finishes (16), and most knockouts (12). He was also the winner of the 2019 ONE Lightweight World Grand Prix.

Lee is also a former pankrationist, where he was a multiple-time national and world champion, as well as a submission grappler. On May 17, 2019, Lee defeated Shinya Aoki to win the ONE Lightweight World Championship for the first time. With his older sister Angela already holding the ONE Atomweight World Championship, they became the first brother-sister pair of mixed martial arts world champions. and his younger brother, Adrian (born in Waipahu), also trains in martial arts. Lee's younger sister Victoria, who was also a mixed martial artist signed to ONE, died in 2022 at the age of 18.

At the 2012 USA Pankration national championships, Lee won two national titles and one silver medal. He also won the World Championship in the MMA division at the 2012 World Pangration Athlima Federation Championships.

Mixed martial arts career Lee trains out of United MMA in Waipahu, Hawaii and Evolve MMA in Singapore, alongside his teammate and sister, Angela and her husband (and also his brother-in-law), Bruno Pucci, who also competes in ONE Championship's bantamweight division.

Lee made his amateur debut in 2015 at Star Elite Cage Fighting, where he defeated Avery Sanchis via first-round submission.

ONE Championship At the age of 17, Lee signed with ONE Championship and made his promotional debut at ONE: Spirit of Champions on December 11, 2015, earning his first career win with a 29-second TKO of David Meak.

Lee followed that up by submitting Mahmoud Deab Mohamed in the first round with a kimura at ONE: Clash Of Heroes on January 29, 2016.

On March 18, 2016, he earned another first-round win against Anthony Engelen at ONE: Union of the Warriors with a TKO stoppage by punches and elbow in a catchweight bout.

At ONE: Ascent To Power on May 6, 2016, Lee improved to 4-0 when he submitted Cary Bullos in the opening round with a brabo choke.

Lee continued his streak of first-round finishes when he stopped Rocky Batolbatol by TKO at ONE: Kingdom Of Champions on May 27, 2016.

In his next match on August 13, 2016, Lee suffered his first professional defeat to rising featherweight Martin Nguyen at ONE Championship: Heroes of the World, losing in the first-round via a guillotine choke.

Lee rebounded by defeating Wan Jianping with a first-round TKO at ONE Championship: Kings of Destiny on April 21, 2017.

For the first time in his career, Lee was pushed to three rounds before finally submitting Keanu Subba with an armbar at ONE Championship: Quest for Greatness on August 18, 2017.

On December 9, 2017, at ONE Championship: Warriors of the World, Lee defeated former ONE Lightweight World Champion Kotetsu Boku in the first round by TKO.

Lee submitted Kazunori Yokota in the second round at ONE Championship: Visions of Victory on March 9, 2018, to clinch his fourth straight win.

ONE Featherweight Championship contender

After his strong run of performances, Lee would earn a title shot against ONE Featherweight World Champion Martin Nguyen at ONE Championship: Unstoppable Dreams on 18 May 2018. Following a five-round back-and-forth battle, Lee would lose by a narrow split-decision, marking his second defeat to the Vietnamese-Australian featherweight.

Lee dropped another match against Filipino Edward Kelly at ONE Championship: Beyond the Horizon on September 8, 2018, after he was disqualified under the promotion's global martial art ruleset. During his takedown of Kelly, Lee was judged to have used an illegal belly-to-back suplex that caused Kelly to land on his head and neck.

He got back on the win sheet against former Pancrase Lightweight Champion Kazuki Tokudome in a 73 kg catchweight bout at ONE Championship: Heart of the Lion on 9 November 2018, defeating the Japanese fighter in the first-round via TKO. The match was added to the card on short notice after his sister Angela Lee, who was scheduled to face Xiong Jing Nan for the ONE Strawweight Championship, was forced to pull out due to a back injury.

In his anticipated rematch against Edward Kelly at ONE Championship: Eternal Glory on January 19, 2019, Lee stopped Kelly via first-round TKO and pushed his overall record to 14–3.

ONE Lightweight Champion

Lee agreed to an open challenge for the title from ONE Lightweight World Champion Shinya Aoki, issued in March 2019 just after Aoki had won the lightweight title himself. Lee, a featherweight, would be moving up a division in order to challenge for the belt. On May 17, 2019, at ONE Championship: Enter The Dragon, Lee survived an armbar submission attempt to upset the Japanese grappling legend in the second-round via TKO finish and win his first mixed martial arts world title. His victory also made him the youngest ever male mixed martial arts world champion,

On September 26, 2019, ONE Championship Chairman and founder Chatri Sityodtong announced that Lee had accepted an offer to serve as a late-notice replacement for the injured Eddie Alvarez in the ONE Lightweight World Grand Prix Final. The match would be against Turkish finalist Saygid Guseyn Arslanaliev at ONE: Century – Part 1 on 13 October 2019, after initial replacement Filipino fighter Eduard Folayang had trouble with visa issues. The late insertion into the event would allow Lee to fight on the same card as his sister Angela Lee, who was defending her atomweight title that night. Lee would go on to win by unanimous decision, earning the ONE Lightweight Word Grand Prix Championship.

In the first title defense, Lee faced Iuri Lapicus at ONE: Inside the Matrix on October 30, 2020. After surviving an initial barrage, he won the fight in the first round by TKO via punches on the ground.

In the second title defense, Lee faced Timofey Nastyukhin at ONE on TNT 2 on April 14, 2021. He won the fight via TKO just over a minute into the first round.

In the third title defense, Lee faced Ok Rae-yoon at ONE: Revolution on September 24, 2021. Lee lost the fight by a unanimous decision. Due to the controversial nature of the decision, it was reviewed by the ONE Competition Committee which ultimately upheld the result.

The rematch between Lee and Ok for the ONE Lightweight World Championship took place on August 26, 2022, at ONE 160. Lee recaptured the title after dropping Yoon in the second round and finishing him on the ground with knees. This win earned him the Performance of the Night award.

ONE Welterweight Champion

Lee moved up to 185 lbs and debuted at welterweight as he challenged for the ONE Welterweight World Championship against reigning champion Kiamrian Abbasov on November 18, 2022, at ONE on Prime Video 4. At weigh-ins, Abbasov missed weight, coming in at 186.25 lbs, 1.25 pounds over the limit. Abbasov was stripped of the title and the bout proceeded at a catchweight with only Lee being able to win the title. He won the fight via technical knockout in the fourth round. This win earned him the Performance of the Night award, and made Lee the fourth simultaneous two-division champion in ONE history.

Hiatus and return Lee went on hiatus from competition due to the death of his sister, fellow-competitor, Victoria Lee, but has expressed commitment to continue fighting in the future.

After a two-years hiatus, Lee was scheduled to defend the ONE Lightweight World Championship against Alibeg Rasulov on November 9, 2024, at ONE 169. However, it was announced that the bout was moved to ONE Fight Night 26 on December 7 for unknown reasons. During the round two, Lee poked Rasulov in the eye rendering him unable to continue. The fight was declared a no contest.

A rematch between Lee and Rasulov took place on November 16, 2025, at ONE 173. Lee won the fight via technical knockout in the second round.

Personal life Lee holds American and Canadian citizenship.

Lee and his wife Katie had their first child in April 2021.

Lee's older sister is fellow ONE World Champion Angela Lee, and his younger sister Victoria Lee made her successful professional MMA debut at the age of 16 on February 26, 2021. On January 7, 2023, it was revealed by his sister Angela that Victoria had died on December 26, 2022, at the age of 18. On September 19, 2023, his sister Angela confessed that she had attempted suicide in 2017 and that their youngest sister, Victoria had taken her own life in December 2022. Lee's younger brother Adrian Lee made his MMA debut for One Fighting Championship in 2024.

Championships and accomplishments

Pankration

World Pangration Athlima Federation (WPAF) World Championship 2012 Agon Men, Cadets, -60 kg — Gold USA Pankration National Championship 2012 Youth, Age 12–13, -153 lb — Silver USFL Pankration Championship 2013 Junior, Age 14–17, -140 lb — Gold FILA Grappling World Championship 2013 Boys, Age 14–15, -66 kg — Gold Most knockouts in ONE history (12)

Mixed martial arts record Win

Alibeg Rasulov TKO (knees) ONE 173

Tokyo, Japan NC

Alibeg Rasulov NC (accidental eye poke) ONE Fight Night 26

Bangkok, Thailand Win

Kiamrian Abbasov TKO (elbows and punches) ONE on Prime Video 4

Kallang, Singapore Win

Ok Rae-yoon TKO (knees) ONE 160

Kallang, Singapore Loss

Ok Rae-yoon Decision (unanimous) ONE: Revolution

Kallang, Singapore | Win

Timofey Nastyukhin TKO (punches) ONE on TNT 2

Kallang, Singapore Win

Iuri Lapicus TKO (punches) ONE: Inside the Matrix

Kallang, Singapore Win

Saygid Guseyn Arslanaliev Decision (unanimous) ONE: Century – Part 1

Tokyo, Japan Win

Shinya Aoki TKO (punches) ONE: Enter The Dragon |

Kallang, Singapore Win

Edward Kelly TKO (punches) ONE: Eternal Glory

Jakarta, Indonesia Win

Kazuki Tokudome TKO (punches) ONE: Heart of the Lion

Kallang, Singapore Loss

Edward Kelly DQ (illegal suplex) ONE: Beyond the Horizon

Shanghai, China Loss

Martin Nguyen Decision (split) ONE: Unstoppable Dreams

Kallang, Singapore Win

Kazunori Yokota Submission (guillotine choke) ONE: Visions of Victory

Kuala Lumpur, Malaysia Win

Kotetsu Boku KO (slam) ONE: Warriors of the World

Bangkok, Thailand Win

Keanu Subba Submission (triangle armbar) ONE: Quest for Greatness

Kuala Lumpur, Malaysia Win

Wan Jianping TKO (elbows and punches) ONE: Kings of Destiny

Pasay, Philippines Loss

Martin Nguyen Technical Submission (guillotine choke) ONE: Heroes of the World

Macau, SAR, China Win

Rocky Batolbatol TKO (submission to punches) ONE: Kingdom of Champions

Bangkok, Thailand Win

Cary Bullos Submission (brabo choke) ONE: Ascent to Power

Kallang, Singapore Win

Anthony Engelen TKO (punches and elbows) ONE: Union of Warriors

Yangon, Myanmar Win

Mahmoud Deab Mohamed Submission (kimura) ONE: Clash of Heroes

Kuala Lumpur, Malaysia Win

David Meak KO (punches) ONE: Spirit of Champions

Pasay, Philippines