Kensuke Sasaki
On January 4, 2004, he defeated Kensuke Sasaki after 12 minutes of intense action at the Tokyo Dome. In April 2005, Nagata formed "Team JAPAN", a group of former amateur wrestlers with a grudge against the younger generation of wrestlers in NJPW. On December 11, 2005, Nagata challenged Brock Lesnar for his IWGP 3rd Belt Championship but was defeated.