About Guy Mezger
Born 1968. Guy Mezger is an American mixed martial arts fighter, kickboxer, karateka and judoka.
Guy Mezger (born January 1, 1968) is an American martial artist, who competed in professional combat sports including sport karate (he is in the Sport Karate Museum Hall of Fame) full contact karate, kickboxing, and boxing, but is most recognized as a mixed martial arts (MMA) fighter. Mezger retired from professional competition on January 25, 2005. He is associated with Lion's Den and runs their school in Dallas. Mezger was a champion in mixed martial arts in two different promotions, the UFC and Pancrase. He holds wins over Tito Ortiz, Masakatsu Funaki, Yuki Kondo, Semmy Schilt, and Minoru Suzuki.
Mezger has trained with many great martial arts competitors and trainer/instructors; his main trainers have been Vince Tamura (judo), Willie Thompson (wrestling), Billy "Jack" Jackson (kickboxing), and Ken Shamrock (shootfighting). Mezger has co-written a book, The Complete Idiot's Guide to Kickboxing; he had an uncredited speaking role in the first-season episode of Walker, Texas Ranger titled "Night of the Gladiator".
Early life Born in Houston and raised in Dallas, Mezger wrestled in high school and also practiced taekwondo, in which he holds a 7th degree black belt. As a professional kickboxer, he won the U.S. Heavyweight title before winning the WKC World Heavyweight Championship in June 1995; a title he defended once before retiring from the sport to compete in Pancrase.
Mixed martial arts career
Ultimate Fighting Championship and Pancrase Mezger began his mixed martial arts career in the Ultimate Fighting Championship at UFC 4 in an alternate match against Jason Fairn. Before the fight, Mezger had asked Fairn to make a 'gentlemen's agreement' not to pull hair due to the fact both men had long hair. Mezger won the bout by TKO after landing a multitude of strikes from full mount. Mezger next fought at UFC 5 in an alternate match against John Dowdy, defeating him by TKO in little over two minutes by mounted strikes. Mezger began to train with Ken Shamrock and became a member of Ken's submission fighting team, the Lion's Den, and joined the Pancrase organization in Japan.
In his second match at the Pancrase 1995 Anniversary Show, Mezger faced Pancrase co-founder and Shamrock's trainer Masakatsu Funaki. The American fighter performed well, scoring high kicks and forcing Funaki to pull guard and work from the bottom, but he was eventually caught in a leglock exchange from his own trip and submitted with an Achilles lock.
In December 1995, Mezger was involved in a controversial match against the other Pancrase co-founder, lauded wrestler Minoru Suzuki. Mezger controlled the match, but he landed an accidental kick to the groin at 7:15 in the first round and was disqualified by the referee. His corner protested and defended the accidental nature of the strike, but the result was not changed. Guy's personal record shows it as a no contest.
Nonetheless, Mezger accumulated a Pancrase 16–7–2 record and become the 7th ever King of Pancrase world champion with a win over Masakatsu Funaki.
Mezger would not return to the UFC until UFC 13 where he competed in the Lightweight Tournament (200 lbs & under). In his first bout, Mezger fought top ranked judo fighter, Christophe Leininger. Leininger was able to score a takedown and gain mount at one point, but he was otherwise soundly beaten as Mezger battled his way to a decision victory. Mezger broke his hand during this fight but continued in the tournament.
The championship round Mezger faced future UFC Light Heavyweight Champion Tito Ortiz. Ortiz was able to counter Mezger's takedown attempt and landed several knees to Mezger's head. To some it appeared that Mezger had tapped, but referee John McCarthy ruled Mezger was blocking the knees and his hand went down as Ortiz shifted his weight. The bout was then stopped to check Mezger's cut. The announcers, as well as Ortiz, thought that the bout was over, but the fight was instead restarted on the feet. Ortiz shot in for a takedown, but Mezger secured a guillotine choke, forcing Ortiz to submit. With this win, Mezger became the UFC 13 lightweight tournament champion.
Mezger then forfeited his King of Pancrase title to fight in the UFC again. Mezger's final bout in the UFC was a rematch with Tito Ortiz at UFC 19: Young Guns. Mezger was sick before the fight but fought anyway, a decision that he regretted after the fight. This resulted in Ortiz handling Mezger and won the bout at the 9:55 mark by referee stoppage. The stoppage was somewhat controversial because both Mezger and his cornerman Ken Shamrock felt that Ortiz's strikes were not doing enough damage to warrant a stoppage. Ortiz then donned a shirt that was insulting to Mezger which provoked an immediate reaction from Ken Shamrock, Mezger's trainer. Mezger would occasionally seek a rematch with Ortiz over the next few years. In 2004 he was finally granted a chance to face Tito Ortiz at UFC 50. Unfortunately, the week of the fight, Mezger was taken to the hospital due to stroke like symptoms, and was taken off the fight card.
PRIDE Fighting championships The former UFC champion made his Pride FC debut in 1999 at Pride 6 against the popular Akira Shoji. The two fighters passed most of the first round in the clinch, where Mezger landed strikes and tried unsuccessfully to take down Shoji. At the second, Akira scored a takedown and performed ground and pound, which Mezger retaliated by controlling the striking again when they returned to their feet; however, the Japanese took Mezger's back on the ground towards the end of the round and scored punches while Guy attempted to escape. At the third and final round, the two traded strikes again and Shoji repeated his back siege before the fight ended. The judges decreed a split decision and it was given to Shoji.
Pride officials then signed Mezger to fight Kazushi Sakuraba, who at the time was considered to be one of the best pound for pound fighters in the world. The fight took place at the Pride Grand Prix 2000 Opening Round. Mezger took the fight on two weeks notice and had a broken foot going into the fight. The contract that Mezger signed stipulated that the fight would be one 15-minute round with no overtime, in contrast to the other fights which were to have an extra round in the case of a draw. The fight mostly consisted of Mezger controlling the fight by stopping Sakuraba's takedown attempts while landing strikes from the outside. The round ended and Mezger expected the fight to go to the judges, but Pride officials wanted the fight to go to overtime. This resulted in one of the largest and most publicized controversies in MMA history.
According to Mezger, Pride did not like the outcome of the fight and changed the agreement/contract on the spot in order to give Sakuraba another chance to win the fight. An argument ensued and Mezger was ordered out of the ring and back to the locker room by his corner man, Ken Shamrock, who was livid at the decision to extend the fight because of Mezger's foot injury and the fact that he took the fight on short notice. Later that night, the president of Pride FC made a public apology to Mezger at the Tokyo Dome for the miscommunication. Mezger added, "Royce's father came up to me after my fight and said, "You got screwed. You won that fight." Here's Helio Gracie walking up to me and telling me I got ripped off."
Mezger next competed against Masaaki Satake, winning the fight by unanimous decision.
Mezger made his return to the ring at Pride 10 - Return of the Warriors, facing Brazilian superstar and future middleweight kingpin Wanderlei Silva. Mezger gained the upper hand early, cutting Silva with several crisp combinations and outpointing Silva on the feet. However, he was ultimately knocked out at the 3:45 mark. Shortly before the knockout, Silva was catching the worse end of the punching exchanges and proceeded to throw an intentional, illegal headbutt to Mezger that eventually led to landing the knockout combination. Many people felt as though this was a cheap shot that affected the end result. Some people, including Kazushi Sakuraba, felt the bout should have been changed to a no contest. Mezger talked about his feelings on the matter in an interview: "I am not going to cry foul, it is the fight game and things like that happen, get used to it. It is no win situation when it comes to answering that question, if I said it did (affect the result) then I would be making excuses. I would just like a rematch."
In December 2001, Mezger was proposed the idea of fighting at Inoki Bom-Ba-Ye while wearing Tiger Mask's attire and mask, but he didn't accept. Thus, Mezger returned to competition at Pride 22 after a year long lay-off, easily winning a decision over Norihisa Yamamoto. Mezger then battled Antônio Rogério Nogueira at Pride 24. Mezger had several good striking exchanges and showcased his submission and takedown defense, but again lost the fight by a controversial split decision.
Retirement On January 25, 2005, Guy Mezger retired from professional fighting after experiencing stroke-like symptoms prior to his scheduled bout with Tito Ortiz. Mezger trains students in boxing, kickboxing and the Lion's Den Mixed Martial Arts system at his gym, Guy Mezger's Combat Sports Club, in Dallas. He also has a consulting company, CS Consulting, that works with both Federal and State law enforcement agencies on re-vamping their defensive tactics training. Mezger is a part owner in a movie/TV production company that is making "reality TV" shows and action and documentary movies. In 2011, he finished up his studies in holistic medicine (receiving his PhD in Holistic Health) and formed a partnership with a doctor's group called Optimal Health Specialists.
Mezger was the President of Mark Cuban's HDNet Fights and was responsible for developing new talent and securing promotion partners for HDnet's Friday Night Fights. He has also commentated for Chuck Norris' full contact, team-based martial arts competition, the World Combat League, and for Japanese MMA organization DREAM.
Personal life Mezger and his wife Michelle have two children, Logan and Rachel. He also has a son named Jake from a previous relationship.
In December 2011, Mezger was involved in an altercation in Dallas in front of a sporting goods store where a man was physically abusing a woman. He stepped in to assist the woman by fighting the man, who attacked Mezger with a knife. The attacker was on parole and afterwards needed medical attention for multiple facial bone and arm bone fractures. Mezger's hand was cut in the fight. It was surgically repaired and he was expected to fully recover.
Championship and accomplishments
Mixed martial arts Pancrase Hybrid Wrestling King of Pancrase Openweight Championship (3 Times) 1996 Pancrase Ranking Tournament Champion Ultimate Fighting Championship UFC 13 Lightweight Tournament Winner UFC Encyclopedia Awards Fight of the Night (One time) vs. Tito Ortiz 1 Submission of the Night (One time) vs. Tito Ortiz 1
Karate World Full Contact 1993 & 1994 World Full-Contact Karate Champion
Kickboxing World Kickboxing Council 1995 WKC World Kickboxing Champion Other 1996 WFFF World Freestyle Fighting Champion (Junior-Heavyweight)
Mixed martial arts record Win
Daniel Bergman TKO (punches) European Vale Tudo 1 – Genesis
Copenhagen, Denmark Loss
Antônio Rogério Nogueira Decision (split) Pride 24 – Cold Fury 3
Fukuoka, Japan Win
Yoshihisa Yamamoto Decision (unanimous) Pride 22 – Beasts From The East 2
Nagoya, Japan Loss
Ricardo Arona Decision (split) Pride 16 – Beasts From The East
Osaka, Japan Loss
Chuck Liddell KO (punch) Pride 14 - Clash of the Titans
Yokohama, Japan Win
Egan Inoue KO (knee and punch) Pride 13 - Collision Course
Saitama, Japan Win
Alexander Otsuka TKO (doctor stoppage) KOTC 7 - Wet and Wild
San Jacinto, California, United States Win
Alexander Otsuka TKO (punches) Pride 12 - Cold Fury
Saitama, Japan Win
Sam Adkins Submission Freestyle Fighting Championship
Dallas, Texas, United States Loss
Wanderlei Silva KO (punches) Pride 10 - Return of the Warriors
Tokyo, Japan Win
Masaaki Satake Decision (unanimous) Pride Grand Prix 2000 Finals
Tokyo, Japan Win
Brad Jones TKO (punches) Pure Action 2
Kings Point, New York, United States Loss
Kazushi Sakuraba TKO (retirement) Pride Grand Prix 2000 Opening Round
Tokyo, Japan Loss
Akira Shoji Decision (split) Pride 6
Yokohama, Japan Loss
Tito Ortiz TKO (punches) UFC 19
Bay St. Louis, Mississippi, United States Win
Yuki Kondo Decision (majority) Pancrase - Advance 12
Chiba, Japan Defended the Pancrase Openweight Championship. Win
Ryushi Yanagisawa Decision (lost points) Pancrase - 1998 Anniversary Show
Tokyo, Japan Defended the Pancrase Openweight Championship. Loss
Semmy Schilt TKO (palm strikes) Pancrase - Advance 8
Kobe, Japan Win
Masakatsu Funaki Decision (unanimous) Pancrase - Advance 5
Yokohama, Japan Won the Pancrase Openweight Championship. Win
Ryushi Yanagisawa Decision (unanimous) Pancrase - Advance 4
Tokyo, Japan Win
Johnny Magilonico Submission (guillotine choke) World Pankration Championships 2
Dallas, Texas, United States Win
Satoshi Hasegawa Technical submission (straight armbar) Pancrase: Alive 11
Yokohama, Japan Win
Kiuma Kunioku KO (head kick) Pancrase: Alive 9
Tokyo, Japan Win
Paul Lazenby Submission (arm-triangle choke) World Pankration Championships 1
Texas, United States Loss
Masakatsu Funaki Submission (triangle armbar) Pancrase: 1997 Anniversary Show
Chiba, Japan Win
Keiichiro Yamamiya Decision (lost points) Pancrase: Alive 7
Fukuoka, Japan Win
Tito Ortiz Submission (guillotine choke)
Won the UFC 13 Lightweight Tournament. Win
Christophe Leininger Decision (unanimous)
UFC 13 Lightweight Tournament Semifinals. Loss
Yuki Kondo Decision (lost points) Pancrase: Alive 2
Chiba, Japan Win
Semmy Schilt Decision (lost points) Pancrase: Alive 1
Tokyo, Japan Win
Yuki Kondo Decision (lost points) Pancrase - Truth 10
Tokyo, Japan Loss
Kiuma Kunioku Decision (split) Pancrase - Truth 7
Nagoya, Japan Win
Ryushi Yanagisawa Decision (unanimous) Pancrase - 1996 Anniversary Show
Chiba, Japan Draw
Osami Shibuya Draw (majority) Pancrase - Truth 6
Fukuoka, Japan Win
Minoru Suzuki KO (slam) Pancrase - Truth 5
Tokyo, Japan Win
Ryushi Yanagisawa KO (head kick) Pancrase - Truth 4
Tokyo, Japan 1996 Pancrase Ranking Tournament Finals Win
Manabu Yamada TKO (doctor stoppage)
1996 Pancrase Ranking Tournament Semifinals Win
Takaku Fuke Decision (unanimous)
1996 Pancrase Ranking Tournament First Round Loss
Bas Rutten Submission (ankle lock) Pancrase - Truth 2
Kobe, Japan Win
Gregory Smit Decision (lost points) Pancrase - Truth 1
Yokohama, Japan NC
Minoru Suzuki NC (accidental groin kick) Pancrase - Eyes Of Beast 7
Sapporo, Japan Draw
Ryushi Yanagisawa Draw (unanimous) Pancrase - Eyes Of Beast 6
Yokohama, Japan Loss
Masakatsu Funaki Submission (achilles lock) Pancrase - 1995 Anniversary Show
Tokyo, Japan Win
John Renfroe Submission (straight armbar) Pancrase - 1995 Neo-Blood Tournament Second Round
Tokyo, Japan Win
John Dowdy TKO (punches) UFC 5
Charlotte, North Carolina, United States UFC 5 Tournament Alternate Bout Win
Jason Fairn TKO (corner stoppage) UFC 4
Tulsa, Oklahoma, United States UFC 4 Tournament Alternate Bout
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Important facts
People in Guy Mezger's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Guy Mezger's
Frequently asked questions
Who is Guy Mezger?
American mixed martial artist
When was Guy Mezger born?
Guy Mezger was born on 1 January 1968 in Houston.
What is Guy Mezger's occupation?
Guy Mezger is a mixed martial arts fighter, kickboxer, karateka and judoka.
What nationality is Guy Mezger?
Guy Mezger is American.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Guy Mezger. https://biography.guide/guy-mezger/
MLA: "Guy Mezger." Biography.guide, https://biography.guide/guy-mezger/.
Chicago: "Guy Mezger." Biography.guide. https://biography.guide/guy-mezger/.
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