1. Sitthichai Sitsongpeenong was born as Anulak Jansuk in Buriram, Thailand on September 23,1991.

1. Sitthichai Sitsongpeenong was born as Anulak Jansuk in Buriram, Thailand on September 23,1991.
Sitthichai Sitsongpeenong had his first fight at the age of 11 in 2002.
Sitthichai Sitsongpeenong beat Fabio Pinca by decision in the first fight and Anuwat Kaewsamrit by decision in the final to win the 4-Man Tournament.
Sitthichai Sitsongpeenong won against Damien Alamos by decision over 5 rounds.
Sitthichai Sitsongpeenong beat Juri Kehl on points at MAX Muay Thai 2 in Pattaya, Thailand on June 29,2013.
Sitthichai Sitsongpeenong won by decision against Jordan Watson at MAX Muay Thai 3 in Zhengzhou, China on August 10,2013.
Sitthichai Sitsongpeenong outpointed Wanchalerm Udduonmuang in the main event of Yokkao 6 in Pattaya, Thailand on January 4,2014.
Sitthichai Sitsongpeenong took an extension round decision over Chingiz Allazov at Thai Boxe Mania in Turin, Italy on January 25,2014.
Sitthichai Sitsongpeenong defeated Mohamed Khamal via UD at Legend 3: Pour Homme in Milan, Italy on April 5,2014.
Sitthichai Sitsongpeenong knocked out Johann Fauveau in round two at Best of Siam 5 in Paris, France, on June 14,2014.
Sitthichai Sitsongpeenong initially been set to face Davit Kiria on the main card but was demoted to the prelims when his opponent was changed.
Sitthichai Sitsongpeenong started fighting exclusively under kickboxing rules at the Kunlun Fight 24 event in Verona, Italy where he lost to Dylan Salvador by decision after three rounds on May 2,2015.
Sitthichai Sitsongpeenong finished as a quarter finalist being defeated by the tournament champion, Superbon Banchamek at Kunlun Fight 53 - World Max Tournament 2016 Final 8 on 24 September 2016 in Beijing, China.
Sitthichai Sitsongpeenong defeated Hasan Toy, Enriko Kehl and Dzhabar Askerov.
Sitthichai Sitsongpeenong won via second round head kick KO to secure the Wu Lin Feng 71kg World Championship.
Sitthichai Sitsongpeenong won a rematch vs Robin van Roosmalen at Glory 31 on June 25,2016 in Amsterdam, Netherlands.
Sitthichai Sitsongpeenong outscored Tyjani Beztati to retain the title on May 12,2018 at Glory 53 in Lille, France.
On May 17,2019, Sitthichai Sitsongpeenong lost the Glory Lightweight Championship to Marat Grigorian by unanimous decision in their fifth meeting at Glory 65 in Utrecht, Netherlands.
On May 14,2020, it was announced that Sitthichai Sitsongpeenong had signed with ONE Championship.
Sitthichai Sitsongpeenong was scheduled to make his ONE debut at ONE Championship: No Surrender on July 31,2020, where was set to face Superbon Banchamek for a third time.
Sitthichai Sitsongpeenong is next scheduled to face promotional newcomer Tayfun Ozcan at ONE Championship: Battleground on July 30,2021.
Sitthichai Sitsongpeenong faced Tayfun Ozcan in the quarter-finals of the 2021 ONE Kickboxing Featherweight World Grand Prix at ONE Championship: First Strike.
Sitthichai Sitsongpeenong was scheduled to face Davit Kiria in the semifinals of the ONE Featherweight Kickboxing World Grand Prix at ONE: Only the Brave on January 28,2022.
Sitthichai Sitsongpeenong faced Chingiz Allazov in the ONE Featherweight Kickboxing World Grand Prix Final at ONE: X on March 26,2022.
Sitthichai Sitsongpeenong faced Mohammed Boutasaa at ONE on Prime Video 3 on October 21,2022.
Sitthichai Sitsongpeenong faced Eddie Abasolo at ONE Friday Fights 22 on June 23,2023.
Sitthichai Sitsongpeenong faced Marat Grigorian at ONE 165 on January 28,2024.
Sitthichai Sitsongpeenong faced Masaaki Noiri on June 8,2024, at ONE 167.
Sitthichai Sitsongpeenong faced Shadow Singha Mawynn on December 20,2024, at ONE Friday Fights 92.
Sitthichai Sitsongpeenong faced Nico Carrillo on April 5,2025, at ONE Fight Night 30.
Sitthichai Sitsongpeenong lost the fight via knockout in round two.