Former PRIDE heavyweight kingpin Fedor Emelianenko returns to the ring for the first time this year when he meets three-time UFC title challenger Pedro “The Rock” Rizzo. Emelianenko, once the sport's pound-for-pound best, looks to run his current win streak to three since suffering a trio of losses under the Strikeforce banner.

UFC 20: Battle for the Gold was a mixed martial arts event held by the Ultimate Fighting Championship on May 7, 1999 at the Boutwell Auditorium in Birmingham, Alabama. The event was seen live on pay per view in the United States, and later released on home video.

UFC 26: Ultimate Field Of Dreams was a mixed martial arts event held by the Ultimate Fighting Championship on June 9, 2000 in Cedar Rapids, Iowa. The main card featured Welterweight Champion Pat Miletich defending his title against John Alessio, and Heavyweight Champion Kevin Randleman defending his title against Pedro Rizzo.

Tank Abbott vs Steve Nelmark • Brad Kohler vs Steve Judson • Jens Pulver vs John Lewis • BJ Penn vs Kaoru Uno • Tony de Souza vs Jutaro Nakao • Pat Miletich vs Shonie Carter • Gary Goodridge vs Paul Herrera ; Bobby Hoffman vs M. Robinson • Pedro Rizzo vs Tank Abbott • Fabiano Iha vs Kaoru Uno • Frank Shamrock vs Igor Zinoviev • Pedro Rizzo vs Tra tellingman • Shonie Carter vs Matt Serra • Lance Gibson vs Jermaine André • Chuck Liddell vs K. Randleman • Ron Waterman vs Andre Roberts • Eugene Jackson vs K.Yamamiya • Carlos Newton vs Matt Hughes • Vitor Belfort vs Wanderlei Silva • Pedro Rizzo vs Josh Barnett • Eugene Jackson vs Royce Alger • Pete Williams vs Mark Coleman • Tito Ortiz vs Evan Tanner

UFC 43: Meltdown was a mixed martial arts event held by the Ultimate Fighting Championship on June 6, 2003, at the Thomas and Mack Center in Las Vegas, Nevada. Headlining the card was the Interim Light Heavyweight Championship match between Randy Couture and Chuck Liddell.

UFC 31: Locked and Loaded was a mixed martial arts event held by the Ultimate Fighting Championship at the Trump Taj Mahal in Atlantic City, New Jersey on May 4, 2001. The event was seen live on pay per view in the United States, and later released on home video.

UFC 23: Ultimate Japan 2 was a mixed martial arts event held by the Ultimate Fighting Championship on November 19, 1999 at Tokyo Bay NK Hall in Tokyo, Japan.

UFC 41: Onslaught was a mixed martial arts event held by the Ultimate Fighting Championship at the Boardwalk Hall in Atlantic City, New Jersey. UFC 41 featured two championship bouts, a Heavyweight Championship Bout between Ricco Rodriguez and Tim Sylvia, and a Lightweight Championship Bout between BJ Penn and Caol Uno. The event also marked the return of Tank Abbott to the UFC

UFC 18: The Road to the Heavyweight Title was a mixed martial arts event held by the Ultimate Fighting Championship on January 8, 1999 in New Orleans, Louisiana. The event was seen live on pay per view in the United States, and later released on home video.

Pride 31: Unbreakable (promoted in Japan as Dreamers) was a mixed martial arts event held by Pride Fighting Championships on February 26, 2006 at Saitama Super Arena in Saitama, Japan. It was also the first Pride pay-per-view event of 2006.

UFC 30: Battle on the Boardwalk was a mixed martial arts event held by the Ultimate Fighting Championship at the Trump Taj Mahal in Atlantic City, New Jersey on February 23, 2001. UFC 30 was also the first UFC event since UFC 22 to see a home video release.

UFC Brazil: Ultimate Brazil (also known as UFC 17.5) was a mixed martial arts event held by the Ultimate Fighting Championship in São Paulo, Brazil on October 16th, 1998. The event was seen on pay per view in the United States and Brazil, and was later released on home video.

Pride Critical Countdown 3 was a mixed martial arts event held by the Pride Fighting Championships. This event held the second round of the Pride Middleweight tournament. It took place at the Saitama Super Arena in Saitama, Japan, on June 26th, 2005.

UFC 34: High Voltage was a mixed martial arts event held by the Ultimate Fighting Championship at the MGM Grand Arena on the Las Vegas Strip in Paradise, Nevada on November 2, 2001. The card was headlined by two Championship Bouts, Randy Couture faced Pedro Rizzo for the Heavyweight Title, and Matt Hughes faced Carlos Newton for the Welterweight Title.

UFC 39: The Warriors Return was a mixed martial arts event held by the Ultimate Fighting Championship on September 27, 2002, at the Mohegan Sun Arena in Uncasville, Connecticut. The event was broadcast live on pay per view in the United States, and was the first UFC event to be released on DVD.

UFC 36: Worlds Collide was a mixed martial arts event held by the Ultimate Fighting Championship at the MGM Grand Arena on the Las Vegas Strip in Paradise, Nevada on March 22, 2002. The main event was a Heavyweight Championship Bout between Josh Barnett and the holder, Randy Couture.

UFC 45: Revolution was a mixed martial arts event held by the Ultimate Fighting Championship at the Mohegan Sun Casino in Uncasville, Connecticut. This event marked the 10th anniversary of the UFC and to celebrate the anniversary the UFC inaugurated its Hall of Fame, with Royce Gracie and Ken Shamrock as the first inductees.

UFC 27: Ultimate Bad Boyz was a mixed martial arts event held by the Ultimate Fighting Championship on September 22, 2000 at Lake Front Arena in New Orleans, Louisiana.

Affliction: Banned was a mixed martial arts event co-promoted by Affliction Clothing and Adrenaline MMA.[2] It took place on July 19, 2008 at the Honda Center in Anaheim, California. The card featured many of the top MMA heavyweight fighters. The main event was the return of PRIDE World Heavyweight Championship Fedor Emelianenko fighting against former two-time UFC Heavyweight Champion Tim Sylvia. The event also saw fights between former UFC Heavyweight Champions Andrei Arlovski and Ben Rothwell, Josh Barnett took on Pedro Rizzo, and former UFC Light-heavyweight Champion Vitor Belfort fought Terry Martin. Former UFC standout Matt Lindland and former Pride FC standout Antônio Rogério Nogueira also competed.