Another match was scratched from ONE: Big Bang scheduled Friday night in Singapore, as the mixed martial arts promotion cited observing COVID-19 protocols.
ONE Championship announced that light heavyweight kickboxing champion Roman Kryklia and Greco-Roman wrestling champion Amir Aliakbari withdrew from their respective matches.
Kryklia tested negative for COVID-19. However, he was under quarantine after coming into close contact with an individual who tested positive on November 27.
Aliakbari, meanwhile, tested positive for COVID-19 prior to his fight. He has been discharged from hospital but will not participate on Friday as a precaution.
The bout involving Aliakbari has been removed from the card, while Krylia’s opponent, Murat Aygun, will remain on the card to face Anderson Silva in a light heavyweight kickboxing bout.
The bout between Marat Grigorian and Ivan Kondratev has been moved to the main event of ONE: Big Bang.
Earlier, Danny Kingad's flyweight bout against Kairat Akhmetov was also postponed after a Team Lakay cornerman tested positive for COVID-19.
The fight was replaced by a strawweight showdown between South Africa's Bokang Masunyane and the Philippines' Rene Catalan.
Also fighting in ONE: Big Bang are Filipina Jomary Torres and Ritu Phogat of India.