Fighters who will be invited to The 4th World Weight Category Championships on August 23rd (Sun.) had been selected and approved by IKO HONBU. Fierce competitions are expected by men' s World top fighters at Makuhari Messe Event Hall in Chiba. 

Lightweight (Under 70kg)
Riyuji Isobe (Brazil)
Julio Del Valle (Costa Rica)
Mohsen Ahmadvand (Iran)
Piotr Moczydlowski (Poland)
Dzhamshed Ulfatov (Russia)
Xolani Majozi (South Africa)
Yuzo Suzuki (Japan)
Tomohiko Matsuoka (Japan)

Middleweight (Under 80kg)
Simon Kennedy (Australia)
Andrews Nakahara (Brazil)
Barja Kumar Rai (Nepal)
Stoian Nicolae (Romania)
Khuseyn Elikhanov (Russia)
Shohei Yamamonto (USA)
Hiroyuki Kidachi (Japan)
Zenjyuro Mori (Japan)

Heavyweight (Under 90kg)
Diogo Silva (Brazil)
Eduardo Tanaka (Brazil）
Tariel Nikoleishvili (Russia)
Goderzi Kapanadze (Russia)
Pabro Estensoro (Spain)
Alejandro Navarro (Spain)
Lucian Gogonel (Romania)
Kentaro Tanaka (Japan)
Tatsuya Murata (Japan)

Super-heavyweight (Over 90kg)
Sergio Da Costa (Brazil)
Anderson Da Silva (Brazil)
Zahari Damyanov (Bulgaria)
Krzysztof Habraszka (Poland)
Mikhail Kozlov (Russia)
Andrey Stepin (Russia)
Makoto Taniguchi (Japan)
Makoto Akaishi (Japan)