Daijiro Matsui

is a Japanese mixed martial artist and professional wrestler. A professional MMA competitor since 1998, he has competed for the PRIDE Fighting Championships, Cage Rage, DEEP, Pancrase, and King of the Cage. As a professional wrestler, Matsui has wrestled for UWF International, Battlarts, New Japan Pro Wrestling, Inoki Genome Federation and most recently GLEAT. A former longtime training partner of Kazushi Sakuraba, Matsui is known for his toughness, conditioning, wrestling prowess and unorthodox offense. Despite his mixed success, he holds notable victories over former UFC Light Heavyweight Champion Quinton Jackson, former BAMMA World Middleweight Champion Tom Watson, former world kickboxing champion Jose Landi-Jons, BJJ black belt Rory Singer, and a draw against former Pancrase Light Heavyweight Champion and ADCC gold medallist Sanae Kikuta. Professional wrestling career After training in judo and amateur wrestling at the International Budo University, Matsui joined shoot-style organization Union of Wrestling Forces International, where he trained under the legendary Nobuhiko Takada. He debuted in September 1996 as "Shunsuke Matsui" against Tatsunori Kamiyama, but he couldn't advance up the card as UWFi folded the same year. Matsui then followed the company's members to the new promotion Kingdom, having matches against Kazushi Sakuraba, Yoshihiro Takayama and Hiromitsu Kanehara, until Kingdom fell in 1998. He then transitioned to MMA. In December 2000, Matsui made a return to pro wrestling at the Inoki Bom-Ba-Ye event, teaming with The Great Sasuke to defeat Akira Shoji and Caol Uno. He also competed in Battlarts, beating Ikuto Hidaka, and in New Japan Pro-Wrestling, wrestling Kendo Kashin in a losing effort for the IWGP Junior Heavyweight Championship. The same year, he faced Kashin again in All Japan Pro Wrestling, wrestling under the name of "Mr. Problem" and wearing modified Kendo Kashin attire and mask. Matsui had also stints in Pro Wrestling Zero1 and in Inoki Genome Federation.