Wrestling World 2000 was the title of New Japan Pro Wrestling (NJPW)'s annual start of the year show that takes place on January 4 in the Tokyo Dome each year. Wrestling World 2000 was the ninth January 4 Dome Show held by NJPW. The show drew 53,500 spectators and $5,900,000 in ticket sales. The event saw the return of World Championship Wrestling's Chris Benoit under the ring name Wild Pegasus, reprising the character he played for NJPW in the early to mid–1990s. The show also featured Rick Steiner and Randy Savage, both working as freelancers brought in specifically for the show. The twelve match card saw a successful defense of the IWGP Junior Heavyweight Tag Team Championship and the IWGP Junior Heavyweight Championship as well as Kensuke Sasaki defeating Genichiro Tenryu to win the IWGP Heavyweight Championship. The undercard featured a match between Masahiro Chono defeated Keiji Mutoh bearing a stipulation that the losing wrestler's faction would have to disband. Chono represented Team 2000, while Mutoh represented nWo Japan. Through Mutoh's loss nWo Japan ceased to be. It also featured the retirement match of Kazuo Yamazaki, as he wrestled his student, Yuji Nagata.
- Numbers in parentheses indicate the length of the match.
- (c) refers to the champion(s) heading into the match.
- Shinjiro Otani and Tatsuhito Takaiwa (c) defeated Kendo Kashin & Minoru Tanaka to retain the IWGP Junior Heavyweight Tag Team Championship (13:19)
- Shiro Koshinaka defeated Satoshi Kojima (10:17)
- Hiroyoshi Tenzan defeated Wild Pegasus (10:55)
- Jushin Liger (c) defeated Koji Kanemoto to retain the IWGP Junior Heavyweight Championship (3:56)
- Manabu Nakanishi defeated Kenzo Suzuki (6:41)
- Yuji Nagata defeated Kazuo Yamazaki (6:44)
- Kimo defeated Kazuyuki Fujita by DQ (4:02)
- Scott Norton defeated Don Frye (8:50)
- Rick Steiner defeated Randy Savage (11:08)
- Shinya Hashimoto & Takashi Iizuka defeated Kazunari Murakami & Naoya Ogawa (11:29)
- Masahiro Chono defeated Keiji Mutoh (25:00)
- If Mutoh loses nWo Japan is forced to disband
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