Sherdog’s Pound-for-Pound Top 10 Rankings Kamaru Usman joined Georges St. Pierre in rarefied air on Saturday night.

Fight Facts: UFC 251 The Ultimate Fighting Championship on Saturday kicked off a run at the now-realized Fight Island in the United Arab Emirates.

The UFC Welterweight Championship: A Visual History The “Nightmare” continues for the rest of the Ultimate Fighting Championship welterweight division.

Usman Dismisses Negative Reaction to UFC 251 Performance: ‘I Worked for 25 Minutes’ After an interesting opening stanza, Kamaru Usman imposed his will against Jorge Masvidal for the better part of four rounds in the UFC 251 headliner.

By the Numbers: UFC 251 Kamaru Usman continued his run of excellence in the welterweight division at UFC 251.

By The Numbers: Kamaru Usman vs. Jorge Masvidal The fight for which the mixed martial arts world had clamored now sits as the marquee attraction at UFC 251 on Saturday in the United Arab Emirates.

This Day in MMA History: July 6 The longest winning streak in UFC history came to an end, courtesy of a sweet left hook by Chris Weidman, seven years ago at UFC 162.

The Fight for Global Supremacy Over the next six months, the Ultimate Fighting Championship’s current pantheon of titleholders could see a significant overhaul.

Opinion: The Actual Biggest Upset in MMA History Most folks point to Matt Serra knocking out Georges St. Pierre as MMA's biggest upset ever. Not so fast, writes Lev Pisarsky.

By the Numbers: Matt Serra The East Meadow, New York, native secured his place in mixed martial arts history at UFC 69 on April 7, 2007, when he authored perhaps the greatest upset of all-time and dethroned...