They don't call it jiu-jitsu, but it doesn't stop these Russians kids from being serious badass submission grapplers.
United World Wrestling, the governing body for Olympic wrestling, has a sub-style known as "Grappling." Aside from a few differences in the rules, it is -- for all intents and purposes -- exactly the same concept as jiu-jitsu.
Matches are won by points or submission, and can be gi or no-gi. There are no advantages, reaping the knee is allowed (but heel hooks are not), and the referees are very quick to restart the competitors if there's a lack of action.
The competitors in both highlights -- which come from the recent Russian Championships and were hosted by the All-Russian Federation of Grappling -- are all under the age of 19.
With flying submission attacks and takedowns, these kids, mostly in their teens, show the future of grappling in Russia is bright -- whatever you want to call it.