Nov 6, 2013; Fort Campbell, KY, USA; Tim Kennedy (red gloves) reacts to his win against Rafael Natal (not pictured) in the middleweight bout during UFC Fight for the Troops at Fort Campbell. Mandatory Credit: Joshua Lindsey-USA TODAY Sports

Free Fight: Watch Tim Kennedy KO Rafael Natal

Tim Kennedy and Michael Bisping are set to face off in the main event of the TUF: Nations Finale in just under two weeks time. Both men have a mutual disdain for one another, and are really looking to punish each other inside the Octagon.

Kennedy, a former Marine, has been ridiculing Bisping ever since he made his way over from StrikeForce back in 2013. Bisping at first dismissed Kennedy, but after Tim won two fights in a row all while bad mouthing Bisping, he could ignore him no longer. Bisping obliged to fight Kennedy, and the UFC matched them up at the TUF Nations Finale.

Before Kennedy and Bisping tango inside the Octagon, let’s take a trip back to Kennedy’s last fight at UFC Fight For the Troops 3. Tim Kennedy was set to face Lyoto Machida, but just a few weeks removed from the bout, Machida was moved to a separate card to replace an injured Michael Bisping against Mark Munoz.

Rafael Natal stepped up on short notice to take on Kennedy in the main event. After a slow paced first round, Kennedy leapt in with a left hook that flattened Natal and knocked him out cold with just 20 seconds left in the round.

Kennedy, surrounded by his army brethren, was cascaded with cheers of adoration. It was truly one of the more special moments in the history of the sport. Watch the fight in it’s entirety below:

Dick's Sporting Goods presents "Hell Week":

Tags: Lyoto Machida Mark Munoz Michael Bisping MMA Rafael Natal Strikeforce Tim Kennedy TUF Nations UFC