Sports Transition Fail

In response to our recent post about Japanese tackle football, a commenter asked a salient question:

I've always wondered if some of the high-ranking sumo wrestlers could make it in the NFL as blitzing specialists. There's been a long history of association between football and wrestling in the US, with a lot of highschool wrestling teams serving as off-season training programs for the football team. I wonder if the Japanese national Football team is stocked with washed out sumo wrestlers?

Microkh