One-on-One with Firas Zahabi: Part 1 In this first installment, the Tristar Gym frontman discusses his background, game planning and training some of the world’s best fighters.

Sherdog’s Official Mixed Martial Arts Rankings Frankie Edgar turned what most pundits expected to be a closely contested scrap into a one-sided thumping.

Pictures: WSOF 15 David Branch, Justin Gaethje and Jessica Aguilar picked up impressive wins at World Series of Fighting 15.

Sherdog’s Official Mixed Martial Arts Rankings On a Saturday jam-packed with MMA, the sport’s big men took center stage.

Branch, Gaethje, Aguilar Taste Victory at World Series of Fighting 15 TAMPA, Fla. -- World Series of Fighting middleweight champion David Branch notched a TKO victory over former Ultimate Fighting Championship title challenger Yushin Okami to cap off...

World Series of Fighting 15 Results: Play-by-Play & Updates Sherdog.com reports from the USF Sun Dome in Tampa, Fla., at approximately 7 p.m. ET with live World Series of Fighting 15 play-by-play.

World Series of Fighting 15 Weigh-in Results: Melvin Guillard Misses Weight For Title Fight World Series of Fighting is back with another mixed martial arts offering, this time serving up World Series of Fighting 15.

What to Watch For: World Series of Fighting 15 Justin Gaethje will put his perfect record and lightweight title on the line against Melvin Guillard on Saturday in Tampa, Fla.

Sherdog’s Official Mixed Martial Arts Rankings Luke Rockhold’s latest move up the 185-pound ranks came at the expense of Michael Bisping.

WSOF 15: "Macaco" Patino vs. Eric Reynolds Added To Live NBCSN Telecast (PRESS RELEASE) -- LAS VEGAS — A lightweight (155 pounds) contest between legendary MMA pioneer and Brazilian Jiu-Jitsu and Judo black belt Jorge Patino (35-15-2) of Houston, Texas and battle-tested finisher...