ONE Championship ONE Middleweight Champion Bigdash made his promotional debut challenging Igor Svirid for the
ONE Middleweight World Championship at
ONE Championship: Tigers of Asia on October 9, 2015. After weathering an early storm in the first round, Bigdash came back to knock out Svirid in the second round to become the new ONE Middleweight World Champion. Bigdash was originally scheduled to defend his title against
Marcin Prachnio at
ONE Championship: Quest for Power on January 14, 2017. However, Prachnio was forced to withdraw due to injury and was replaced by
Aung La Nsang. Bigdash retained the title by unanimous decision. He rematched with Aung La Nsang at
ONE Championship: Light of a Nation on June 30, 2017. Bigdash lost the title by unanimous decision.
Post-title reign Bigdash was scheduled to face Leandro Ataides at
ONE Championship: Grit and Glory on May 12, 2018. He lost by technical knockout in the third round. Bigdash was scheduled to face Yuki Niimura at
ONE Championship: Destiny of Champions on December 7, 2018. He won via first-round submission. Bigdash was originally set to challenge
Aung La Nsang for the ONE Light Heavyweight World Championship at
ONE on TNT 4 on April 28, 2021. However, he was forced to withdraw after
testing positive for COVID-19 and was replaced by
Reinier de Ridder. After a three-year absence, Bigdash returned to face
Fan Rong at
ONE Championship: Winter Warriors 2 on December 17, 2021. He by third-round submission via guillotine choke. Bigdash was scheduled to challenge
Reinier de Ridder for the ONE Middleweight World Championship at
ONE 159 on July 22, 2022.{{cite web|url=https://www.scmp.com/sport/martial-arts/mixed-martial-arts/article/3185887/one-championship-159-line-updated-new|title=ONE Championship 159 line-up updated with new matchups after last-minute cancellations ==Championships and accomplishments==