No. 1 Ranked Fighters by Region
Japan
| Year | Lightweight | Middleweight | Heavyweight | Super Heavyweight |
| 2007 | Kou Tanigawa | Kazuhito Yamada | Tatsuya Murata | Takayuki Tsukakoshi |
| 2006 | Yoshiaki Kikuhara | Kazuhito Yamada | Naohiro Nomoto | Norichika Tsukamoto |
| 2005 | Kou Tanigawa | Hiroyuki Kidachi | Kentaro Tanaka | Takayuki Tsukakoshi |
| 2004 | Kou Tanigawa | Kazuhito Yamada | Kentaro Tanaka | Takayuki Tsukakoshi |
| 2003 | Masafumi Tagahara | Hiroyuki Kidachi | Hitoshi Kiyama | Kunihiro Suzuki |
| 2002 | Daisuke Komiyama |
Yoshitaka Sato |
Tadashi Ishihara | Hajime Kazumi |
| 2001 | Masafumi Tagahara | Hiroyuki Kidachi | Hitoshi Kiyama | Hajime Kazumi |
| 2000 | Masafumi Tagahara | Hiroyuki Kidachi | Hitoshi Kiyama | Kunihiro Suzuki |
| 1999 | Ryu Narushima | Hiroyuki Kidachi | Toru Okamoto | Hajime Kazumi |
| 1998 | Kou Tanigawa | Tatsuya Fukuda | Toru Okamoto | Hajime Kazumi |
| 1997 | Kou Tanigawa | Hitoshi Kiyama | Masayoshi Takaku | Norichika Tsukamoto |
| 1996 | Kou Tanigawa | Hiroyuki Miake | Norichika Tsukamoto |
| 1995 | Ryu Narushima | Makoto Ikeda | Kenji Yamaki |
| 1994 | Kou Tanigawa | Hiroyuki Miake | Kenji Yamaki |
| 1993 | Kensaku Yamamoto | Hidenori Aoki | Hajime Kazumi |
| 1992 | Kensaku Yamamoto | Eiji Kawamoto | Yoshihiro Tamura |
| 1991 | Kenji Midori | Naoyuki Sonoda | Akira Masuda |
| 1990 | Kenji Midori | Hiroyuki Miake | Akira Masuda |
| 1989 | Seiji Yamame | Yasuhiro Kuwajima | Kenji Yamaki |
| 1988 | Kenji Midori | Yasuhiro Kuwajima | Yutaka Ishi |
| 1987 | Kenji Midori | Yasuhiro Kuwajima | Akiyoshi Matsui |
| 1986 | Takahiro Kajiwara | Yasuhiro Kuwajima | Akiyoshi Matsui |
| 1985 | Kenji Midori | Masahiro Oga | Akiyoshi Matsui |
| 1984 | Masahiro Oga | Hidenori Kakinuma | Makoto Nakamura |
No. 1 Ranked Fighters by Region: World Europe Russia Japan Rest of the World