In the fight above, an M-1 Challenge bout between Karl Amoussou and Dmitry Samoilov, the referee takes longer getting the two fighters re-positioned in the center of the ring after they're tangled in the ropes than Amoussou takes knocking Samoilov out with a brutal head kick.
The clock is stopped while the ref re-positions the fighters, so the official time of that fight was 18 seconds. That's the fastest stoppage of Amoussou's career, but not by much: The 24-year-old Amoussou, who will fight Trevor Prangley on Friday night's Strikeforce Challengers card, has won in 35 seconds or less on four different occasions in his short MMA career.
Here's Amoussou knocking out Kazuhiro Hamanaka with a flying knee in 23 seconds:
Here's Amoussou submitting Lee Chadwick with a rear-naked choke in 31 seconds:
I couldn't find a video of the fourth quick stoppage on Amoussou's record, a 35-second triangle choke submission of Colin McKee. But you get the point: None of those opponents are nearly as experienced or skilled as Prangley, but I love the way Amoussou looks to finish fights quickly. He's a fighter to keep an eye on.