Question: When was the undefeated Russian mixed martial artist of Avar heritage born who was a MMA star and trains with Magomedrasul Mukhtarovich Gazimagomedov?
Sentence (from "Magomedrasul Gazimagomedov"): In preseason he trains with MMA stars Rustam Khabilov and Khabib Nurmagomedov.
Relevant evidence: Yes