No amateur resultsProfessional record| Date | Opponent | Place | Result | | 1966 | | + Dec. 11 | Masao Fujiwara | Tokyo, Japan | KO 1 | | 1967 | | + Jan. 15 | Yoichi Ichikawa | Tokyo, Japan | KO 1 | | + Feb. 12 | Akio Fujita | Tokyo, Japan | W 4 | | + Mar. 5 | Toru Kimura | Tokyo, Japan | KO 3 | | - May 17 | Hajime Kagawa | Tokyo, Japan | L 4 | | = June 12 | Hajime Kagawa | Tokyo, Japan | Draw 4 | | - Aug. 9 | Keiji Murabayashi | Tokyo, Japan | KO by 1 | | - Oct. 6 | Kazuo Yashiro | Tokyo, Japan | L 4 | | + Nov. 8 | Tadao Nakamura | Tokyo, Japan | KO 1 | | + Dec. 5 | Tetsuji Okamoto | Hitachi, Japan | W 4 | | 1968 | | + Jan. 17 | Haruo Kikumoto | Tokyo, Japan | KO 3 | | + Jan. 31 | Toshio Araguchi | Tokyo, Japan | W 4 | | + Apr. 2 | Noboru Nakamoto | Sapporo, Japan | KO 2 | | - June 15 | Koichi Otomaru | Tokyo, Japan | L 4 | | = July 15 | Jin Komase | Tokyo, Japan | Draw 4 | | + Oct. 13 | Tsunehisa Ninomiya | Tokyo, Japan | KO 1 | | + Nov. 17 | Makoto Yumi | Tokyo, Japan | KO 1 | | 1969 | | + Feb. 3 | Tsuyoshi Yamamoto | Tokyo, Japan | KO 2 | | = Mar. 3 | Haruo Kikumoto | Tokyo, Japan | Draw 8 | | = May 5 | Jin Komase | Tokyo, Japan | Draw 8 | | - July 23 | Isao Shiiya | Tokyo, Japan | L 8 | | + Sept. 10 | Haruo Kikumoto | Tokyo, Japan | W 8 | | + Oct. 9 | Kenshichiro Date | Utsunomiya, Japan | W 10 | | + Dec. 10 | Isao Ichihara | Tokyo, Japan | KO 6 | | 1970 | | + Jan. 25 | Jaguar Kakizawa | Tokyo, Japan | W 10 | | - June 6 | Ismael Laguna | Panama City, Panama | TKO by 13 | | World Lightweight Title | | + Aug. 26 | Chang Bok Lee | Tokyo, Japan | W 10 | | - Oct. 10 | Lionel Rose | Melbourne, Australia | L 10 | | - Oct. 29 | Rene Barrientos | Honolulu, United States | L 10 | | 1971 | | = Mar. 3 | Masataka Takayama | Tokyo, Japan | Draw 10 | | Japanese Lightweight Title | | + Apr. 7 | Jin Komase | Tokyo, Japan | W 10 | | + June 4 | Mar Cutillon | Agana, Guam | TKO 4 | | - Aug. 13 | Shinichi Kadota | Tokyo, Japan | KO by 8 | | - Dec. 4 | Chang-Kil Lee | Seoul, South Korea | L 10 | | 1972 | | + Jan. 16 | Shinichi Kadota | Tokyo, Japan | W 12 | | OPBF Lightweight Title | | + Apr. 6 | Hiroyuki Murakami | Tokyo, Japan | W 10 | | + May 19 | Rudy Gonzalez
| Tokyo, Japan | W 12 | | OPBF Lightweight Title | | + Dec. 18 | Kenji Iwata | Tokyo, Japan | KO 1 | | 1973 | | + Apr. 23 | Fred Rolando Pastor | Tokyo, Japan | W 12 | | OPBF Lightweight Title | | + July 30 | Hiroshi Tonooka | Tokyo, Japan | KO 3 | | - Sept. 8 | Roberto Duran | Panama City, Panama | TKO by 10 | | World Lightweight Title | | 1974 | | + Feb. 28 | Gener Cruz | Tokyo, Japan | KO 4 | | + Apr. 11 | Rodolfo Gonzalez | Tokyo, Japan | KO 8 | | WBC Lightweight Title | | = Sept. 12 | Arturo Pineda | Nagoya, Japan | Draw 15 | | WBC Lightweight Title | | + Nov. 28 | Rodolfo Gonzalez | Osaka, Japan | KO 12 | | WBC Lightweight Title | | 1975 | | + Feb. 27 | Ken Buchanan | Tokyo, Japan | W 15 | | WBC Lightweight Title | | + June 5 | Arturo Pineda | Osaka, Japan | W 15 | | WBC Lightweight Title | | + Dec. 4 | Alvaro Rojas | Tokyo, Japan | KO 14 | | WBC Lightweight Title | | 1976 | | - May 8 | Esteban De Jesus | Bayamon, Puerto Rico | L 15 | | WBC Lightweight Title | | 1977 | | - Apr. 2 | Saensak Muangsurin | Tokyo, Japan | KO by 6 | | WBC Super-Lightweight Title | | 1978 | | - June 20 | Yohi Arai | Tokyo, Japan | L 10 |
Summary
Total bouts: 51, Won: 31 (17 inside the limit), Lost: 14 (5 inside the limit), Draw: 6, NC: 0
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