Professional Boxing Record
| 31 Wins (25 knockouts, 6 decisions), 6 Losses (5 knockouts, 1 decision), 1 Draw | |||||||
| Result | Record | Opponent | Type | Round | Date | Location | Notes |
| Loss | 35-4-2 | Eddie Gazo | TKO | 11 | 07/06/1977 | Nihon Budokan, Tokyo, Japan | WBA World Light Middleweight Title. Referee stopped the bout at 0:45 of the 11th round. |
| Loss | 58-5-9 | Jose Manuel Duran | KO | 14 | 18/05/1976 | Nihon University, Tokyo, Japan | WBA World Light Middleweight Title. Wajima knocked out at 0:50 of the 14th round. |
| Win | 41-1-1 | Jae-Doo Yuh | KO | 15 | 17/02/1976 | Nihon University, Tokyo, Japan | WBA World Light Middleweight Title. Yuh knocked out at 1:47 of the 15th round. |
| Loss | 37-1-1 | Jae-Doo Yuh | KO | 7 | 07/06/1975 | City Sogo Gym, Kitakyushu, Fukuoka, Japan | WBA World Light Middleweight Title. Wajima knocked out at 2:04 of the 7th round. |
| Win | 51-6-1 | Oscar Albarado | UD | 15 | 21/01/1975 | Nihon University, Tokyo, Japan | WBA/WBC World Light Middleweight Titles. 69-67, 70-69, 75-68. |
| Loss | 49-6-1 | Oscar Albarado | KO | 15 | 04/06/1974 | Nihon University, Tokyo, Japan | WBA/WBC World Light Middleweight Titles. Wajima knocked out at 1:57 of the 15th round. |
| Win | 35-0-1 | Miguel De Oliveira | MD | 15 | 05/02/1974 | Metropolitan Gym, Tokyo, Japan | WBA/WBC World Light Middleweight Titles. 73-73, 73-70, 74-71. |
| Win | 42-2-1 | Silvano Bertini | RTD | 12 | 14/08/1973 | Makomanai Ice Arena, Sapporo, Hokkaido, Japan | WBA/WBC World Light Middleweight Titles. Bertini retired at 3:00 of the 12th round. |
| Win | 42-6-2 | Ryu Sorimachi | MD | 15 | 19/04/1973 | Prefectural Gymnasium, Osaka, Japan | WBA/WBC World Light Middleweight Titles. 71-71, 72-71, 72-71. |
| Draw | 30-0 | Miguel De Oliveira | PTS | 15 | 09/01/1973 | Metropolitan Gym, Tokyo, Japan | WBA/WBC World Light Middleweight Titles. 71-71, 73-71, 71-71. |
| Win | 17-8-2 | Matt "Art" Donovan | KO | 3 | 03/10/1972 | Nihon University, Tokyo, Japan | WBA/WBC World Light Middleweight Titles. Donovan knocked out at 0:53 of the third round. |
| Win | 63-17-7 | Domenico Tiberia | KO | 1 | 07/05/1972 | Sports Centre, Fukuoka, Japan | WBA/WBC World Light Middleweight Titles. Tiberia knocked out at 1:49 of the first round. |
| Win | 22-1-2 | Cassius Naito | KO | 7 | 02/02/1972 | Metropolitan Gym, Tokyo, Japan | Naito knocked out at 1:30 of the 7th round. |
| Win | 40-7-3 | Carmelo Bossi | SD | 15 | 31/10/1971 | Nihon University, Tokyo, Japan | WBA/WBC World Light Middleweight Titles. 68-67, 72-70, 70-73. |
| Win | 12-8-1 | Tetsuo Hoshino | KO | 2 | 28/05/1971 | Tokyo, Japan | Japan Light Middleweight Title. Hoshino knocked out at 2:41 of the second round. |
| Win | 0-9 | Alfredo Fuentes | KO | 1 | 26/03/1971 | Tokyo, Japan | Fuentes knocked out at 3:08 of the first round. |
| Win | 18-3 | Hideo Kanazawa | KO | 2 | 18/02/1971 | Osaka, Japan | Hideo knocked out at 1:45 of the second round. |
| Win | 23-15-5 | Hisao Minami | KO | 7 | 08/01/1971 | Tokyo, Japan | Japan Light Middleweight Title. Minami knocked out at 2:38 of the 7th round. |
| Win | 5-6-2 | Raizo Kashima | KO | 3 | 30/10/1970 | Tokyo, Japan | Japan Light Middleweight Title. Kashima knocked out at 2:34 of the third round. |
| Win | 12-5 | Tetsuo Hoshino | KO | 5 | 10/09/1970 | Tokyo, Japan | Japan Light Middleweight Title. Hoshino knocked out at 2:12 of the fifth round. |
| Win | 21-13-2 | Muneo Mizoguchi | KO | 8 | 09/08/1970 | Korakuen Hall, Tokyo, Japan | Japan Light Middleweight Title. Muneo knocked out at 2:09 of the eighth round. |
| Win | 10-22-1 | Ken Sato | KO | 3 | 23/05/1970 | Sapporo, Hokkaido, Japan | Sato knocked out at 2:31 of the third round. |
| Win | 10-6 | George "Jimmy" Carter | SD | 10 | 09/04/1970 | Korakuen Hall, Tokyo, Japan | Japan Light Middleweight Title. 49-48, 48-47, 48-49. |
| Loss | 9-6 | George "Jimmy" Carter | UD | 10 | 05/02/1970 | Tokyo, Japan | Japan Light Middleweight Title. 46-48, 46-48, 47-49. |
| Win | 14-3-4 | Turtle Okabe | KO | 7 | 18/12/1969 | Tokyo, Japan | Japan Light Middleweight Title. Okabe knocked out at 2:25 of the 7th round. |
| Loss | 28-9-5 | Pedro Adigue | KO | 1 | 30/10/1969 | Tokyo, Japan | Wajima knocked out at 2:21 of the first round. |
| Win | 13-10-1 | Noriyasu Yoshimura | KO | 4 | 04/09/1969 | Nagoya, Aichi, Japan | Japan Light Middleweight Title. Yoshimura knocked out at 1:37 of the fourth round. |
| Win | 23-15-6 | Rocky Alarde | KO | 8 | 30/07/1969 | Tokyo, Japan | Alarde knocked out at 1:28 of the eighth round. |
| Win | 12-0 | Alacran Kusanagi | KO | 9 | 16/06/1969 | Tokyo, Japan | Kusanagi knocked out at 0:21 of the ninth round. |
| Win | 2-4 | Takemi Kato | KO | 6 | 27/03/1969 | Tokyo, Japan | Kato knocked out at 1:00 of the sixth round. |
| Win | -- | Masaki Nomoto | PTS | 6 | 03/02/1969 | Tokyo, Japan | |
| Win | -- | Masami Takechi | RTD | 4 | 30/12/1968 | Tokyo, Japan | Takechi retired at 3:00 of the fourth round. |
| Win | 0-3-2 | Sozo Yamamoto | KO | 1 | 27/10/1968 | Tokyo, Japan | Sozo knocked out at 1:25 of the first round. |
| Win | -- | Takao Higa | KO | 3 | 06/10/1968 | Korakuen Hall, Tokyo, Japan | Higa knocked out at 1:19 of the third round. |
| Win | -- | Tadakazu Sakai | KO | 2 | 31/08/1968 | Tokyo, Japan | Sakai knocked out at 1:05 of the second round. |
| Win | -- | Toshiaki Kaneko | KO | 3 | 08/08/1968 | Tokyo, Japan | Kaneko knocked out at 2:00 of the third round. |
| Win | -- | Koji Watanabe | KO | 2 | 30/06/1968 | Tokyo, Japan | Koji knocked out at 0:52 of the second round. |
| Win | -- | Akira Takekawa | KO | 1 | 15/06/1968 | Tokyo, Japan | Akira knocked out at 2:51 of the first round. |
Read more about this topic: Koichi Wajima
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