BJJ had a solid base in Brazil but it really took off with Royce Gracie's string of victories in UFC. It just happened that Grand Pa Gracie and his sons were pretty busy at night as well so they spreaded their fighting science all over the world pretty succesfully. Though I would not imagine anything that big, do you think that solid performances by Nurmi and other high level Sambo guys from the Easter front in the UFC and Bellator could all of a sudden create some kind of a wave in countries exposed to MMA down the road? I know that timing and marketing are also key in spreading a martial, as well as a few charismatic figures. Other than Russians and athletes from the former Russian block, are there that many guys that are known to train sambo pretty hard in MMA today? Can you see Sambo as a full substitute for BJJ? Though Fedor's fist got the job done most of the time, he was a pretty tough cat to handle on the ground given his smaller size at heavy weight.