On the post-fight press conference, Anderson Silva said he learned that front kick from Steven Seagal
I've learned sort of a variation of that [Front Kick] in Japan, probably 30, 40 years ago, and I've been perfecting it all these years. It's not exactly cut out there, it's just something that I created that's a little bit different. I thought Anderson could learn well because he's sort-of a natural born athlete, has very quick hands and feet, and his kicks are good to begin with. So I started teaching him kicks that I thought he could really hurt people with.
In practice, he was knocking other people out with body shots, and at that point I knew he was going to start making these kicks work.
If you were amazed in seeing a front kick KO for the first time, Seagal says it's because he hasn't taught it to a lot of people yet:
...Nobody knows the kick. I'm teaching it to Machida, Anderson, and a few other Brazilians, but we haven't really used it much yet. I haven't shown it to many people yet.
At the press conference Silva credited Seagal with teaching him the kick. As translated by Silva's manager Ed Soares:
"Steven Seagal helped me perfect that kick. That was a kick we were working on before I stepped in. This was a kick that I trained a lot."
Watch the full video after the jump.