Khabib Nurmagomedov finds himself in exclusive company.
Of the 634 fighters the Ultimate Fighting Championship lists on its roster, only 28 of them -- 4.4 percent -- are currently undefeated. Nurmagomedov, at a perfect 23-0, is at the front of the line. The Dagestani grappler entered the UFC in January 2012 and has since rattled off victories over Darrell Horcher, Rafael dos Anjos, Pat Healy, Abel Trujillo, Thiago Tavares, Gleison Tibau and Kamal Shalorus. In the process, Nurmagomedov has surfaced as the No.