Shiro Koshinaka
Championship résumé: 6 title reigns across 2 championships, 960 total days as champion.
Title Reigns
6
| IWGP Tag Team Championship NJPW · with Kensuke Sasaki (team page) | Mar 22, 1999 to Jun 27, 1999 | 97 days |
| IWGP Tag Team Championship NJPW · with Genichiro Tenryu (team page) | Jul 15, 1998 to Jan 4, 1999 | 173 days |
| IWGP Junior Heavyweight Championship NJPW · IWGP Champion Series 1988 | Jun 24, 1988 to Mar 16, 1989 | 265 days |
| IWGP Tag Team Championship NJPW · with Keiji Muto (team page) | Mar 20, 1987 to Mar 26, 1987 | 6 days |
| IWGP Junior Heavyweight Championship NJPW · Challenge Spirit 1986 | Sep 19, 1986 to Aug 2, 1987 | 317 days |
| IWGP Junior Heavyweight Championship NJPW · IWGP Junior Heavyweight Title League Finals | Feb 6, 1986 to May 19, 1986 | 102 days |