ONE: Big Bang took place on Friday, December 4, to mark the start of the final month of 2020 for ONE Championship.
After late card shake-ups, the final bill featured seven bouts in total with four mixed martial arts contests.
The main event was a featherweight kickboxing affair in ONE Super Series action between Marat Grigorian and Ivan Kondratev. Grigorian, one of the pound-for-pound best strikers on the planet, narrowly avoided the upset in his debut after being knocked down in the opening round.