Juanito Ibarra is a Mexican-American boxing

Boxing

Boxing, also called pugilism, is a combat sport in which two people fight each other using their fists. Boxing is supervised by a referee over a series of between one to three minute intervals called rounds...

 and mixed martial arts

Mixed martial arts

Mixed Martial Arts is a full contact combat sport that allows the use of both striking and grappling techniques, both standing and on the ground, including boxing, wrestling, Brazilian jiu-jitsu, muay Thai, kickboxing, karate, judo and other styles. The roots of modern mixed martial arts can be...

 trainer, predominantly known for his work with champions in boxing and MMA such as Oscar de la Hoya

Oscar de la Hoya

Oscar De La Hoya is a retired American boxer of Mexican descent. Nicknamed "The Golden Boy", De La Hoya won a gold medal at the Barcelona Olympic Games shortly after graduating from Garfield High School. De La Hoya comes from a boxing family. His grandfather Vicente, father Joel Sr., and brother...

 and until 2008 Quinton "Rampage" Jackson

Quinton Jackson

Quinton Ramone Jackson ;, also known as Rampage Jackson, is an American mixed martial artist and actor. He is a former UFC Light Heavyweight Champion. Jackson rose to prominence in Japan's Pride Fighting Championships where he was noted for his powerful body slams including a knockout victory over...

. Ibarra and Jackson parted ways after his loss at UFC 86

UFC 86

UFC 86: Jackson vs. Griffin was a mixed martial arts event held by the Ultimate Fighting Championship on July 5, 2008, at the Mandalay Bay Events Center in Las Vegas, Nevada....

.

Ibarra was ranked #469 on the "Boxings 500 best trainers" list. Recently Ibarra started training pro boxer James Toney

James Toney

James Nathanial Toney is an American professional boxer who has held world titles in the middleweight, super middleweight, and cruiserweight divisions. Toney currently fights in the heavyweight division in boxing and also now competes in mixed martial arts.-Boxing career:Toney's amateur boxing...

to fight in MMA.