I have heard that there's a new development in the MMA camps in Japan. There are soon going to be Sumo boxers in the MMA world.
Oh, yeah... "float like a tub of lard, sting like a bee..."

I know those guys could hit hard -- they have some serious fucking open hand striking power so I'm sure they could learn to punch. Unfortunately, once they fall down they are kind of like a turtle on its back -- they don't get up so quick. I think any big sumo guy would get massacred once he lost his footing -- there are a few exceptions, but those guys are the smaller ones who wouldn't be dramatically larger than MMA heavies anywyay.