UFC 137: Penn vs. Diaz was a mixed martial arts event held by the Ultimate Fighting Championship on October 29, 2011 at Mandalay Bay Events Center in Las Vegas, Nevada.

The former Strikeforce champion, who infamously cost himself a title shot with Georges St-Pierre when he skipped pre-event media commitments, instead took out his frustrations on B.J. Penn and battered the former UFC champ into the night's second career retirement. Both fighters showed impressive striking accuracy in the first round, one in which Penn took Diaz's back but couldn't capitalize once on the mat. But on the feet, he matched Diaz's punches and landed the type of accurate blows the former Strikeforce champ has rarely dealt with in recent fights. In the second, Penn again was willing to stand flatfooted in the pocket, and especially in the clinch, he did damage with punches. But Diaz returned fire with some body shots and knees to the head while Penn was backed against the cage. The exchanges built Diaz's confidence, and with his first true taste of blood, he teed off with more frequency and dug into Penn's ribs with body shots. Subsequent combinations put Penn in survival mode, and the former two-division champ took heavy damage in surviving the final minutes of what proved to be a disastrous round for him. Despite the lopsided second round, Penn was willing to play Diaz's game in the third. He got sucked into the streetfight and had his moments, but Diaz's stellar conditioning and avalanche of punches simply proved too much to overcome. The fighters closed out the round by dishing out a ridiculous amount of damaging punches, but Penn, who was badly bloodied and bruised in the fight, couldn't get the finish he needed for the victory.

In the end, the judges scored it 29-28, 29-27 and 29-28 in Diaz's favor.

After the fight, a seemingly dejected B.J. Penn said his illustrious career is over.

UFC 137: Penn vs. Diaz Results:

Preliminary card (Facebook)

Middleweight bout: United States Dustin Jacoby vs. United States Clifford Starks – Starks defeated Jacoby via unanimous decision (30–27, 30–27, 30–27).

Middleweight bout: United States Chris Camozzi vs. France Francis Carmont – Carmont defeated Camozzi via unanimous decision (30–26, 30–27, 30–27).

Lightweight bout: United States Ramsey Nijem vs. United States Danny Downes – Nijem defeated Downes via unanimous decision (30–25, 30–26, 30–27).

Light Heavyweight bout: United States Brandon Vera vs. United States Eliot Marshall – Vera defeated Marshall via unanimous decision (29–28, 29–28, 29–28). This bout aired on the Spike broadcast following the Siver vs. Cerrone fight.

 

Preliminary card (televised)

Catchweight (148 lb) bout: United States Tyson Griffin vs. Poland Bart Palaszewski – Palaszewski defeated Griffin via KO (punches) at 2:45 of round 1.

Lightweight Bout: Germany Dennis Siver vs. United States Donald Cerrone – Cerrone defeated Siver via submission (rear naked choke) at 2:22 of round 1. This bout aired last on the PPV broadcast following the Penn vs. Diaz fight.

 

Main card

Featherweight bout: Japan Hatsu Hioki vs. United States George Roop – Hioki defeated Roop via split decision (29–28, 28–29, 29–28).

Bantamweight bout: United States Scott Jorgensen vs. United States Jeff Curran – Jorgensen defeated Curran via unanimous decision (29–28, 29–28, 30–27).

Heavyweight bout: Croatia Mirko Filipovic vs. United States Roy Nelson – Nelson defeated Filipovi? via TKO (punches) at 1:30 of round 3.

Heavyweight bout: France Cheick Kongo vs. United States Matt Mitrione – Kongo defeated Mitrione via unanimous decision (30–27, 30–28, 29–28).

Welterweight bout: United States BJ Penn vs. United States Nick Diaz – Diaz defeated Penn via unanimous decision (29–28, 29–27, 29–28).

 UFC 107: Penn vs. Sanchez – The Ultimate Fighting Championship head to Memphis, Tennessee Saturday evening (December 12).

BJ “The Prodigy” Penn took on Diego “Nightmare” Sanchez for the UFC lightweight title, with Penn favored to win. Penn didn’t disappoint, winning via TKO (cut) in round 5 to retain the UFC Lightweight Championship

Frank Mir destroyed Cheick Kongo in under two minutes with a left hook that knocked him off his feet

 

 

The UFC 107 Penn vs. Sanchez Results

UFC 107 Main Card Results

   – Heavyweight bout: Paul Buentello vs. Stefan Struve

Struve defeated Buentello via majority decision (29-28, 29-28, 28-28).

   – Lightweight bout: Kenny “KenFlo” Florian vs. Clay “The Carpenter” Guida

Florian defeated Guida via submission (rear naked choke) at 2:19 of round 2.

   – Welterweight bout: Jon Fitch vs. Mike Pierce

Fitch defeated Pierce via unanimous decision (29-28, 29-28, 29-28).

   – Heavyweight bout: Frank Mir vs. Cheick Kongo

Mir defeated Kongo via technical submission (guillotine choke) at 1:12 of round 1.

   – Lightweight Championship bout: B.J. Penn vs. Diego Sanchez

Penn defeated Sanchez via TKO (cut) at 2:37 of round 5 to retain the UFC Lightweight Championship

MORE:

   -  UFC 107 Preliminary Card Results

   – UFC 107 Video Preview

   – UFC 107 Fights Comments

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