LAS VEGAS — There aren’t too many karate practitioners succeeding at the highest level of mixed martial arts. Meet Stephen “Wonderboy” Thompson.

A kickboxer with over 50 fights, made his UFC debut a spectacular one at UFC 143. Thompson sized up Dan Stittgen for a few minutes and when his opponent relaxed a bit, Wonderboy landed a nasty roundhouse kick right on Stittgen’s chin. He was out cold in a split second at the 4:13 mark of the first round.

That’s a helluva bar Thompson just set for Knockout of the Night. The UFC awards KO of the Night, Submission of the Night and Fight of the Night bonuses usually good for $65,000. Thompson looks like a shoo-in right now.

It certainly wasn’t the fight of the night. Stittgen, also making his promotional debut, never looked comfortable in the Octagon. His strength is supposedly jiu-jitsu, but he never got close enough to Thompson to even attempt a takedown.

Thompson’s kickboxing pedigree is impressive. He reeled off 57 straight victories before moving over to MMA in 2008, where’s now 6-0.

You can watch UFC 143 right here on Yahoo! Sports