1. Roman Olegovich Kryklia is a Ukrainian heavyweight kickboxer currently signed to ONE Championship where he competes in both Light Heavyweight and Heavyweight division in Kickboxing, where he is the inaugural and current ONE Light Heavyweight Kickboxing World Champion.
Roman Kryklia is 2015 SUPERKOMBAT World Grand Prix runner-up, and won Kunlun Fight 80 and K-1 World GP 2016 Belgrade tournaments.
Roman Kryklia holds notable wins over: Iraj Azizpour, Guto Inocente, Murat Aygun, Andrei Stoica, Tarik Khbabez, Rade Opacic, Nordine Mahieddine, Fabio Kwasi, Jahfarr Wilnis, and Sergej Maslobojev.
Roman Kryklia was born in the city of Krasnohrad, Kharkiv Oblast in a nearly-dissolve Ukrainian SSR.
Roman Kryklia was the silver Thai Boxing champion of Ukraine among amateurs in the city of Odesa.
In October 2012, Roman Kryklia made his professional debut against Tomas Mozny at Nitrianska noc bojovnikov 2012.
Roman Kryklia won both the semifinal bout against Jiri Stariat and the final bout against Radovan Kulla by decision.
Roman Kryklia then took part in the 2015 Tatneft Cup heavyweight tournament, scoring knockouts of Claudiu Istrate in the semifinals and Daniel Lentie in the finals.
Roman Kryklia won a unanimous decision against Ivan Pavle in the semifinals, but lost to Tarik Khbabez by decision in the finals.
Roman Kryklia won the tournament with a first-round TKO of Arnold Oborotov.
Just two weeks later, Roman Kryklia entered the 2016 K-1 Europe heavyweight tournament.
Roman Kryklia won the quarterfinals against Bosnian Bahrudin Mahmic, semifinals against Atha Kasapis and finals against Fabio Kwasi in the same manner - knocking all three with a knee strike.
Roman Kryklia won the fight by TKO, after Aurieng's corner threw in the towel in the second round.
In December 2017, Roman Kryklia fought in the Kunlun Fight heavyweight tournament, held at the KLF 68 event.
Roman Kryklia won the quarterfinal bout against Ning Tianshuai by a first-round TKO and the semifinal bout against Felipe Micheletti by unanimous decision.
Roman Kryklia lost the final fight against Iraj Azizpour by an extra round decision, despite coming into the fight as a favorite.
Roman Kryklia fought Yuksel Ayaydin at MFC 7, in Ayaydin's retirement fight, winning the fight by decision.
Roman Kryklia afterwards fought Daniel Svkor for the WAKO World heavyweight tile, winning by a second-round knockout.
Roman Kryklia won the fight by unanimous decision, and went on to face Tsotne Rogava in the final.
At Kunlun Fight 80, Roman Kryklia fought in the KLF heavyweight tournament.
Roman Kryklia defeated Martin Pacas by unanimous decision in the quarterfinal, and Rade Opacic by a second round TKO in the semifinal, before fighting a rematch with Iraj Azizpour in the finals.
Roman Kryklia was more successful in their second fight, winning a unanimous decision.
On November 16,2019, Roman Kryklia defeated Tarik Khbabez by TKO to become the inaugural ONE Light Heavyweight Kickboxing World Champion.
Roman Kryklia was expected to defend his belt against Andrei Stoica at ONE Infinity 1, but the light heavyweight title fight postponed due to coronavirus.
Roman Kryklia was rescheduled to defend the ONE Light Heavyweight Kickboxing World Championship against Murat Aygun at ONE Championship: Big Bang on December 4,2020.
Accordingly, Aygun received a new opponent, while Roman Kryklia was scheduled to fight Andrei Stoica, who took the fight on short notice being announced only a few days before the match, at ONE Championship: Collision Course.
At the official weigh in, Roman Kryklia weighed more than Stoica.
Roman Kryklia was scheduled to make his second ONE Kickboxing Light Heavyweight title defense against Murat Aygun at ONE Championship: NextGen on October 29,2021.
However, Aygun was pulled from the fight and Roman Kryklia was instead scheduled to face Iraj Azizpour for the inaugural ONE Kickboxing Heavyweight World Championship.
However, due to an undisclosed medical issue, Roman Kryklia withdrew from the fight.
Roman Kryklia was rebooked against Murat Aygun for January 14,2022 at ONE: Heavy Hitters.
Roman Kryklia faced Guto Inocente in the semifinals of the ONE Heavyweight Kickboxing World Grand Prix Tournament at ONE 161 on September 29,2022.
Roman Kryklia knocked Inocente down twice before the one-minute mark of the opening round, which prompted the referee to wave the fight off.
Roman Kryklia was booked to face Iraj Azizpour in a trilogy bout in the finals of the ONE Heavyweight Kickboxing World Grand Prix Tournament at ONE 163 on November 18,2022.
Roman Kryklia won the fight by a second-round knockout, after having been dropped by Azizpour in the opening frame.
Roman Kryklia was expected to make his third ONE Light Heavyweight Kickboxing World Championship defense against Francesko Xhaja at ONE Fight Night 12 on July 14,2023.
Roman Kryklia faced Alex Roberts for the inaugural ONE Heavyweight Muay Thai World Championship at ONE Fight Night 17 on December 9,2023.
Roman Kryklia won the fight via knockout in round one and this win earned the $50,000 Performance of the Night bonuses.
Roman Kryklia was suspended for 4 years by National Anti-Doping Agency of France from the participation in all sports events organized or authorized by French sports federations until 7 May 2022.