天山広吉
On August 28, 1999 in Tokyo, Nagata and Manabu Nakanishi defeated Tatsutoshi Goto and Michiyoshi Ohara for the IWGP Tag Team Championship. They held the title until July 20, 2000, when they lost to Satoshi Kojima and Hiroyoshi Tenzan in Sapporo, Hokkaido. Nagata and Nakanishi feuded with Kojima and Tenzan for several months, but were unable to regain the title. On January 4, 2000, his mentor Kazuo Yamazaki retired and Nagata served as his final opponent, winning the match.