The air is pretty rarefied for Khabib Nurmagomedov.
You have Jon Jones. You have Amanda Nunes. Maybe you have Henry Cejudo or Demetrious Johnson. Other than that, no one besides Nurmagomedov has a stronger claim to MMA's iron throne, the distinction of being the world's pound-for-pound best.
In Saturday's main event at UFC 242, Nurmagomedov put his UFC lightweight title and undefeated 27-0 record on the line against Dustin Poirier, who just defeated Max Holloway to capture the interim lightweight strap. When a fighter as great as Poirier is in the underdog house this deeply, that tells you all you need to know about the opponent.