A look back at some of the fights in PFL history.

A monster-sized contender emerges in the heavyweight division when Renan Ferreira delivers one of the fastest KOs in PFL History.

Guillotine Choke is an iconic submission maneuver usually taught on day one at grappling academies. Don't let its simplicity fool you. Once your neck is trapped, it's only a matter of time before everything fades to black.

As grappling techniques have evolved, dangerous leg lock specialists have found success in MMA with these devastating moves.

Tap, Nap or Snap; the best submissions in the PFL and WSOF featuring Marlon Moraes, Magomed Magomedkerimov and Natan Schulte.