At this point in MMA I have to ask: do people with one arm ever lose on the regional circuit? Seriously, between Nick Newell and, well I guess Nick Newell and just a couple other random one-armed fighters, I feel like men that only have one arm can only lose in championship level fights in somewhat major organizations. There's simply no evidence of the contrary.
Take Dave Llewellyn. He doesn't let the fact that he has one arm get him down. He just ends up knocking out Lee Curry. The tastier version of Lee Murray.
Thanks to Liam Mills for the tip.