Highlighted by a perfectly executed Andrei Arlovski headkick knockout, another win for Tim Sylvia amongst a spattering of boos, and a gritty scrap between Evan Cutts and Reagan Penn, ProElite “Big Guns” reaffirmed some old theories and brought to light a few revelations. Here is what we learned from Saturday’s event in Illinois.

On this week's edition of the Low Blow we break down the impressive performance from Nick Diaz at UFC 137, the rumors concerning Floyd Mayweather and Manny Pacquiao, Bellator, and UFC 138.

Last weekend Diaz stamped his name across the UFC banner with a win over legend BJ Penn. Because of Diaz's performance, UFC President Dana White stripped Carlos Condit of the next title shot. We discuss if White made the right decision. Also we give our early opinions of a possible GSP/Diaz matchup at Super Bowl weekend.

Dana White is the most famous non-fighter in the sport of mixed martial arts today.  The burly bald headed figure heads the largest and most dominant organization in the sport, the Ultimate Fighting Championship.

He helped take a sport that was nearly extinct and more than 40 million dollars in the red to the most booming sport in the world, become televised in virtually every country in the world, and earn himself more pay than most will make in an entire lifetime.

But the UFC President may be in for a bigger fight than he would ever have in the Octagon. Meet his mother.

In the 20 years the UFC has been in existence only a handful of names have gone down as true legends. Fighters such as Royce Gracie, Ken Shamrock, Chuck Liddell, Tito Ortiz, Matt Hughes, Randy Couture and now B.J. “The Prodigy” Penn populate the list.

But after a disappointing unanimous decision loss to Nick Diaz on Saturday at UFC 137, Penn told UFC commentator Joe Rogan that he is calling it quits. And whether or not Penn stays true to his announcement, we count down the top five moments in his illustrious career. 

Nearly 48 hours have passed since the conclusion of UFC 137 and fans are still buzzing over the sudden retirement of two of the sport’s all-time greats. Losses from Mirko “Cro Cop” Filipovic and B.J. Penn caused the legends to announce then end of their magnificent careers.

In a two-part series that will look at the five most important fights upon the resumes of Penn and Filipovic, US Combat Sports hopes to bring fans a little closure to the end of two of the game’s most exciting competitors.

Entering Saturday’s matchup against Roy Nelson with back-to-back losses weighing heavily on his mind, the possibility of retirement seemed high for the Croatian striking sensation. A third-round stoppage via Nelson unfortunately sealed the deal and sent “Cro Cop” onto the next chapter of his life.

A quick glance at the Florida fight scene unveils one of the country's most powerful states in terms of mixed martial arts. Home to some of the top gyms in the world the Sunshine State already serves as base to many fighters within the UFC.

But with rising superstars such as Hector Lombard, Alexis Vila, and many more itching for a shot under the bright lights, Florida fight fans should be on the lookout for these ten fighters ready to make their way onto Dana White's roster.

Episode four of UFC reality TV series The Ultimate Fighter saw two bouts broadcast in a single week. USCS's own MMA Mom Lynne McCreary continues her blog series with part two of her breakdown of this week's fights:

In the second half of the episode, team coach Jason “Mayhem” Miller announced the bantamweight bout. Upon hearing his name called, Dustin Pague whipped out a green afro wig he had hidden and called out “Loueeeee.” Louis Guadinot, best known for his shoulder length green dyed hair, stepped up to accept the challenge.

Last night on UFC reality television series The Ultimate Fighter, the show took an uncharacteristic break from the back room drama in order to show two full bouts in the feather and bantamweight divisions. USCS's own MMA Mom Lynne McCreary continues her blog series on the show with a two part breakdown of the fights, the first featuring her son, Dennis Bermudez:

In tonight’s show there was not only one, but two fights. Good news for all those who want less pranking and more spanking*.

The third fight between Frankie Edgar and Gray Maynard at UFC 136 was once again magnificent. But perhaps the most intriguing aspect that emerged from the fight was Dana White's take on the sport's pound-for-pound rankings.

If you are still in the dark, White stated that current lightweight champion  Edgar is the number two pound-for-pound fighter in the world, “I don’t care who disagrees, you are wrong and I’m right.  He (Edgar) is the number two pound-for pound fighter in the world, period,” White said.

So what does pound-for-pound really mean and where does the 155-pound dynamo stand?

This Saturday at the Boardwalk Hall in Atlantic City, New Jersey, top Mid-Atlantic prospect Jacob Kirwan will have his first shot at national television on the main card of Bellator 54 against undefeated Brazilian fighter turned Bombsquad exponent Renee Nazare.

The 8-3 Kirwan is coming off of a loss, even though it was to one of the greatest submission artists the region has ever produced, and is inflating himself up from featherweight to fight Nazare at 155. Nazare has appeared on Bellator main cards before and is a darling of the organization for his fast paced fights and exciting finishes. All these factors together clearly spell out that Kirwan is being set up for a neat kill against a fighter who is all but guaranteed a spot in Bellator's next 155 pound tourney.

The one thing that any tune-up opponent has going for him is that he has nothing to lose.