Seeing the James "Sandman" Irvine vs. Drew McFeddries fight on the card for UFC 98 made me secretly pine for a one-shot, hit me with your best shot a thon where each slugger would just take a shot to the chin and then get a chance to deliver one until one fell down. All these guys are basically looking for one-shot and get put out about as often they put someone else out, sometimes during the same fight. Sandman put out Houston Alexander and then Anderson Silva put him out with one shot while holding his leg. McFeddries dropped Sakara and then got dropped by Cote. I think Rampage probably punches the hardest in MMA but he's not knocked out and he has slightly more game so I wouldn't qualify him. Sadly the Iceman might qualify for the tournament now.
Here's my Entrants for my One-Shot Wonder Neanderthal Tournament (God bless them, they are always entertaining and probably will never get cut):
Who did I miss?