Here it is, proof that Duane “Bang” Ludwig has the fastest knockout in UFC history. It turns out Bang’s knockout was actually 6.06 seconds, not 4 seconds, but he’s still the fastest. Just barely though. Todd Duffee’s knockout came in a 7.56 seconds, but there was actually one faster. The Korean Zombie’s knockout over Mark Hominick just missed Ludwig’s by two-tenths of a second at 6.26 seconds.