Randy Brown delivered a highlight-reel knockout at UFC Kansas City on Saturday night.
Brown floored Nicolas Dalby with a devastating right hand in the second round of their welterweight bout, leaving the 40-year-old face down on the canvas.
The final 30 seconds of the fight was a back-and-forth brawl up until Brown's finish.
Brown, 34, is now 4-1 in his past five Octagon appearances and said he wants to face a top-15 opponent next.
Dalby suffered his first stoppage loss in 30 professional fights.