The concept of mixed martial arts was popularized in the West by Bruce Lee via his system of Jeet Kune Do. Lee believed that "the best fighter is not a Boxer, Karate or Judo man. The best fighter is someone who can adapt to any style, to be formless, to adopt an individual's own style and not following the system of styles." In 2004, Ultimate Fighting Championship (UFC) founder Dana White called Lee the "father of mixed martial arts" and stated: "If you look at the way Bruce Lee trained, the way he fought, and many of the things he wrote, he said the perfect style was no style. You take a little something from everything. You take the good things from every different discipline, use what works, and you throw the rest away". Numerous fighters in combat sports were inspired by Lee. For example, boxing champion Sugar Ray Leonard said he perfected his jab by watching Lee, boxing champion Manny Pacquiao compared his fighting style to Lee, and UFC champion Conor McGregor also compared himself to Lee and said that he believes Lee would've been a champion in the UFC if he were to compete in the present day. American full-contact kickboxing pioneer Benny Urquidez was inspired to enter martial arts tournaments after he watched Bruce Lee's demonstration at Long Beach in 1964. American taekwondo pioneer Jhoon Goo Rhee learnt from Lee what he calls the "accupunch", which he incorporated into American taekwondo; Rhee later coached heavyweight boxing champion Muhammad Ali and taught him the "accupunch", which Ali used to knockout Richard Dunn in 1975. According to heavyweight boxing champion Mike Tyson, "everyone wanted to be Bruce Lee" in the 1970s. UFC pound-for-pound champion Jon Jones also cited Lee as inspiration, with Jones known for frequently using the oblique kick to the knee, a technique that was popularized by Lee. Numerous other UFC fighters have cited Lee as their inspiration, with several referring to him as a "godfather" or "grandfather" of MMA.