Sean Keith Sherk (born August 5, 1973) is an American mixed martial arts fighter currently fighting for the UFC. He currently holds a professional mixed martial arts (MMA) record of thirty-six wins, four losses and one draw. Sherk has fought in both the UFC and Pride FC, and is a former UFC Lightweight Champion. His only four MMA losses are to former UFC champions BJ Penn, Matt Hughes, Frankie Edgar and current Undisputed UFC welterweight champion Georges St. Pierre.

Sherk began fighting MMA in June 1999, where he originally fought at the welterweight weight-class. During his time as a welterweight, Sherk suffered two losses; one to Matt Hughes and one to Georges St. Pierre. In 2006, Sherk decided to drop down to the lightweight class of 155 lb. In his first fight as a lightweight, Sherk defeated Kenny Florian to become the first UFC Lightweight Champion in over four years. After his first successful defense with the title, Sherk was stripped of the title after testing positive for steroids, an accusation he unsuccessfully fought against in a series of hearings. Upon his return in May 2008, Sherk failed to win back the title from then champion, B.J. Penn.

Frank James Edgar (born October 16, 1981) is an American mixed martial artist, who competes as a lightweight in the Ultimate Fighting Championship and is a former UFC Lightweight Champion. His first career loss came against Gray Maynard in 2008, which marked the beginning of a noted rivalry. He later avenged the loss to Maynard with a KO victory in 2011. As of March 2012, he is ranked as the #2 lightweight in the world by Sherdog.com.

Born and raised in Toms River, New Jersey, Frankie Edgar wrestled at Toms River High School East, making it to the New Jersey state championship tournament on three occasions, placing second as a junior and fifth as a senior. Edgar is the oldest of 3 children, Edgar went on to compete in the NHSCA Senior Nationals and placed second before he finished high school. He continued wrestling at Clarion University of Pennsylvania, where he qualified for the nationals all four years there. Edgar is also an assistant coach for the Rutgers University wrestling team.

Edgar entered his first mixed martial arts fight with only a few weeks of training outside of his wrestling background. Edgar originally trained with Rob Guarino of Rhino Fight Team, but today he is part of the Gracie system under Ricardo Almeida in Hamilton, NJ. Since seventh grade Edgar has wrestled with Steve Rivera at Elite Wrestling NJ in Jackson, NJ. His boxing trainer is Mark Henry of Millstone, NJ.

Evan Dunham (born December 18, 1981) is an American mixed martial artist who currently fights for Ultimate Fighting Championship in their lightweight division. He fights out of Throwdown Training Center in Las Vegas.

Evan was born to Bob and Delyn Dunham.

He attended the University of Oregon, and worked in various jobs such as a cable installer, before becoming a fighter full-time. During this time, he had a tattoo inscribed on his ribs saying "ninety percent mental".

In an amateur bout in 2006 (a year before Dunham's pro debut), Dunham fought UFC lightweight title contender Gray Maynard. Dunham lost the fight via unanimous decision.

Dunham made his professional debut in 2007; he had five fights total in 2007. After winning six straight, Dunham was invited to fight for Palace Fighting Championship, a mid-size organization. Dunham won his fight over Dustin Akbari and remained undefeated.

Dunham was recently awarded his Brazilian Jiu-Jitsu Black Belt.

Dunham made his UFC debut on February 21, 2009 against Per Eklund at UFC 95. Dunham showed his aggressive style, knocking the more experienced Eklund out with a straight left at 2:14 of round 1.

Ryuki Ueyama (born 17 April 1976 in Tokyo) is a Japanese mixed martial artist who competes in the middleweight division. He has fought for organizations such as; Fighting Network RINGS, DEEP, Pancrase, Hero's and Pride FC.

Ueyama began his Mixed martial arts career on 21 September 1998 at Rings - Fighting Integration VI. He lost to Yasuhito Namekawa by decision. Ueyama lost to Namekawa again by decision on 21 February 1999. Ueyama picked up his first win less than a month later at Rings Australia. He beat Dennis Kefalinos by knee bar in round 1. He was disqualified for eye gouging in his next fight against Lee Hasdell on 23 April 1999 in Japan. After his fight with Hasdell, he went unbeaten for over a year and a half with wins over Willie Peeters, Yasuhito Namekawa and Tim Thomas^{[disambiguation needed ]}, with draws against Lloyd Berg, Dave Menne and Kosei Kubota. Ueyama eventually lost on 20 March 2001 against Sokun Koh at Rings - Battle Genesis Vol. 7.

Ueyama drew with Kosei Kubota for a second time on 18 August 2001 at DEEP - 2nd Impact. He lost a decision against Kiuma Kunioku at Pancrase - 2001 Anniversary Show a month later. He returned to DEEP in December of that year, defeating LaVerne Clark by TKO. Then at Pancrase - Spirit 2 he lost to Kazuo Misaki by decision.

Tyson Lee Griffin (born April 20, 1984) is an American mixed martial artist from Albany, California. Griffin currently fights as a Featherweight in the Ultimate Fighting Championship (UFC).

Griffin was a standout wrestler at Albany High School and moved on to wrestle at Skyline Junior College before dropping out. He began training at David Terrell's NorCal Fighting Alliance and the Cesar Gracie Academy. During his first mixed martial arts training session, Terrell cut two gashes over Griffin's left eye, requiring stitches. Griffin states that he committed himself to a career in MMA while in the hospital waiting room. His mother supported him during his first year of training, but after his professional debut he had to get side jobs to support himself through his early career.

Tyson Griffin began his professional career in 2004 in the Gladiator Challenge promotion. In his third bout, he dropped to featherweight to earn a TKO victory over future World Extreme Cagefighting featherweight champion Urijah Faber, which stood as Faber's only defeat for over three years. Griffin went on to win all of his first six fights before facing Duane Ludwig at Strikeforce: Revenge. He won the bout by TKO in the first round, attracting the attention of major promotions. After considering offers from Pride Fighting Championship and the UFC, Griffin signed with the UFC so that he could continue to fight stateside. While cornering for David Terrel at UFC 59 in Las Vegas, Griffin had an opportunity to meet members of the Xtreme Couture camp for the first time.