the TKO. Tsuyoshi's last fight in UFC was at UFC 37, fighting Ricco Rodriguez. The fight featured long, back and forth grappling action, with Rodriguez taking dominant position and Kosaka reversing and blocking him, until Ricco finally secured a mount and threw punches to the face for the TKO victory. PRIDE Fighting Championships After RINGS's demise, Kosaka wandered between Pancrase and the MMA division of New Japan Pro-Wrestling. He then landed in PRIDE Fighting Championships, in which his first fight would be a rematch against Fedor Emelianenko for the latter's technical defeat in RINGS, taking place in PRIDE Bushido 6. The fight was one-sided and brutal, with Fedor landing strikes through Kosaka's guard while the Japanese tried unsuccessfully to counterattack with leglocks from the bottom. At the end, after taking punches during most of the round, a bloody Kosaka's corner threw the towel between rounds. Kosaka returned in PRIDE 31 against legendary Brazilian grappler and Brazilian Top Team coach Mario Sperry. The bout was even shorter, as Kosaka knocked him out with punches after a brief struggle. Knowing the end of his career was near, TK announced his intentions to retire should he lose any of his matches in 2006. The day of his fight with Sperry was also the same day of his son's birth. At PRIDE Total Elimination Absolute, Kosaka fought Mark Hunt in what would be his last fight. Due to the weight difference between both fighters, knees and kicks were not allowed on the ground. Effectively, TK struggled with the much heavier kickboxer, taking his back and performing an inverted triangle/keylock combination only for Hunt to force his way out via raw strength. Back to standing, Kosaka traded strikes with Hunt and landed effective hits despite the difference in level, absorbing heavy punches and delivering in return combos against the ropes. At the second round, the Japanese again tried unsuccessfully to grapple with Hunt, and after long series of strikes the kickboxer knocked him out with a right punch, finally ending the match. Post-PRIDE From 2003 to 2005, he worked sporadically in professional wrestling for New Japan Pro-Wrestling, challenging Yoshihiro Takayama for the NWF Heavyweight Championship and feuding with Yuji Nagata. He also would defeat the 50 ib heavier Ricardo Morais in a MMA match for NJPW. He also fought for Deep, facing Antônio Rogério Nogueira, Antônio Rodrigo's brother. Kosaka scored takedowns and throws, but he