found himself on the defensor role, which he successfully played by using his classic reversals. On the third round, he was outstruck and received punches on the ground, but he retaliated at the final time with a toehold attempt from inverted guard, and ended the bout taking down Nogueira. The bout went to decision, with Nogueira coming over. KosaKa would go to Pancrase, defeating the similarly much heavier Ron Waterman for the Pancrase Super Heavyweight Championship. He returned to the company for a match against Mike Kyle, losing by doctor decision in a controversial fashion, as Kyle eye-gouged Kosaka and actually damaged his cornea without being penalized. RIZIN Fighting Federation Rizin Fighting Federation announced Kosaka would debut for the promotion against James Thompson. The bout took place on December 29, 2015 and Kohsaka won the fight via TKO in the second round after controlling the fight with punches and knees. Kohsaka's next fight will be against Sumo Baruto Kaito December 29, 2016 as part of Rizin's Openweight tournament. Kosaka faced Mirko Cro Cop on December 31 at RIZIN World Grand Prix 2017: Final Round. He lost the fight via TKO early in the first round. Kosaka faced the Kyokushin Karate World Champion Mikio Ueda on April 17, 2022 at Rizin 35. Kosaka announced that this bout will be his last and he will retire afterwards. He won the fight by a first-round stoppage. Fighting style As a fighter, Kosaka was known for his conditioning, well rounded skillset and grappling ability. He would predominantly use his Judo expertise in the ring, in the form of effective hip throws while standing and a heavy top control while on the ground, but he also showed his Shootfighting influence through various types of Leglocks and effective single and double-leg takedowns. He was especially proficient in reversing position, distinguishing himself with his trademark "TK scissors" sweep, in which he would use his legs to dismount the opponent and perform leglock attempts. Along with his grappling, Kohsaka made use of an intelligent striking game to wear down his adversary, and he later gained significant punching power after training with Maurice Smith. There is debate about what kind of technique is the "TK guard" Kosaka was once known for. The move is, according to different sources, a half guard, a butterfly guard, or an entire system of guard game. Personal life Koshaka is married and has two