UFC Fight Night 184: Overeem vs. Volkov was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on February 6, 2021 at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A heavyweight bout between the 2010 K-1 World Grand Prix Champion, former Strikeforce Heavyweight Champion and UFC Heavyweight Championship challenger Alistair Overeem and former Bellator Heavyweight World Champion Alexander Volkov served as the event headliner.

UFC Fight Night 184: Overeem vs. Volkov

UFC Fight Night 190: Gane vs. Volkov was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on June 26, 2021 at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A heavyweight bout between Ciryl Gane and former Bellator Heavyweight World Champion Alexander Volkov served as the event's headliner.