Debuts can sink an act before they get started, or give them a mountain to climb to get over with a brand-new audience.

Umar Nurmagomedov was the perfect fighter in the early rounds against UFC bantamweight champion Merab Dvalishvili. While ...

Reiner de Ridder debuted with the UFC in November, but UFC 311 was his real welcome party. De Ridder, a former two-division ...