[gryson]

I don't know the current restrictions, but at least in the recent past, there were limitations on the number of foreign-born sumo wrestlers a stable could have. Despite that, the few Mongolians who are able to join a stable are dominating the sport. And I think a lot of sumo fans agree that their presence has been great for sumo. I have seen Hakuho wrestle on several occasions and feel lucky to have witnessed the greatest wrestler of all time. I can't imagine what the current sumo landscape would look like without the Mongolians who have given it so much fresh life. The article is a fascinating read.