Khabib Nurmagomedov is Russian MMA fighter of Avar decent. Khabib has a background in Sambo ( 2 times sambo world champion), freestyle wrestling and judo( black belt). He currently holds the longest undefeated record with 25 wins. Check out the podcast of the Joe Rogan podcast with his guest Bryan Callen speaking about UFC and MMA. Also in one part, they talk about Khabib and his wrestling skills.