Dejdamrong Sor Amnuaysirichoke (Thai: เดชดำรงค์ ส.อำนวยศิริโชค; born November 7, 1978) is a Thai former mixed martial artist who has competed in ONE Championship, where he competed in the strawweight division. He is a former ONE Strawweight World Champion, being the inaugural titleholder, and is considered to be one of the most successful Thai mixed martial artists, having become the first Thai to win an MMA world title.
Prior to mixed martial arts, Dejdamrong was a Muay Thai fighter with 350 fights who won multiple Lumpinee Stadium titles in three different weight classes.[1]
Aside from competing in mixed martial arts, Dejdamrong was an instructor at the Evolve MMA gym based in Singapore until 2023. He currently owns and coaches at Sor Dejdamrong Muaythai in Phuket, Thailand.[2]
Muay Thai career
Amnuaysirichoke competed in Muay Thai for over 20 years, and was a three-division Lumpinee Stadium champion at mini flyweight, light flyweight, and flyweight;[3] and amassed an unofficial record of 282-65-3.[4] He retired in 2007.[5]
Mixed martial arts career
ONE Championship
2014–2016: Early career & ONE Strawweight World Champion
Amnuaysirichoke began his professional MMA career in 2014 for ONE Fighting Championship. On June 14, 2014, Dejdamrong made his debut at ONE FC: Era of Champions, where he defeated Jomanz Omanz by first-round TKO.
He started out undefeated at 6–0, including a win over Roy Doliguez on May 22, 2015, to claim the ONE Strawweight World Championship, becoming the most successful Thai mixed martial artist and first Thai world champion in MMA.[6] Dejdamrong was the ONE World Champion for over a year before losing the title to Yoshitaka Naito on May 27, 2016.[7] Since losing the Strawweight World Title, Dejdamrong has gone 5–4 in ONE Championship.
Dejdamrong faced Jeremy Miado in a rematch on February 22, 2019, at ONE Championship: Call to Greatness. This time, he was able to secure a second-round TKO victory.[14]
Nevertheless, Dejdamrong was able to close out 2019 on a high note with a third-round TKO victory over Muhammad Imran on November 22, 2019, at ONE Championship: Edge Of Greatness.[16]
2020
Dejdamrong competed only once in 2020. On October 10, 2020, he faced Hexi Getu at ONE Championship: Reign of Dynasties. After getting dominated on the ground over three rounds, he lost by split decision.[17]
^ONE Championship refers to their 125 lb class as Strawweight, but under the Association of Boxing Commissions in the United States, 125 lbs is considered Flyweight.