# Hiroshi Kobayashi (boxer)

Hiroshi Kobayashi (小林 弘, Kobayashi Hiroshi, born 23 August 1944 in Gunma, Japan) is a former professional boxer who held the Undisputed Super Featherweight Championship.

## Professional career

Kobayashi turned pro in 1962 and won the Lineal, WBC and WBA Super Featherweight Title in 1967 by defeating Yoshiaki Numata by 12th-round KO in a bout where Numata was down once in the 6th and three times in the 12th round. Kobayashi became the undisputed Super Featherweight champion of the world. Kobayashi was stripped of his WBC title on 20 January 1969 after failing to go through with an agreed rematch with Rene Barrientos. (There first fight ended in a contentious draw) Kobayashi defended the title six times before losing the belt to Alfredo Marcano in 1971. He retired later in the year, after losing by knockout in the 7th round against Roberto Durán in Panama.

## Professional boxing record

| 75 fights | 61 wins | 10 losses |
| By knockout | 10 | 4 |
| By decision | 51 | 6 |
| Draws | 4 | 4 |
| No. | Result | Record | Opponent | Type | Round, time | Date | Location | Notes |
| 75 | Loss | 61–10–4 | Roberto Durán | KO | 7 (10) | 1971-10-16 | Gimnasio Nuevo, Panama City, Panama | |
| 74 | Loss | 61–9–4 | Alfredo Marcano | TKO | 10 (15) | 1971-07-29 | Prefectural Gymnasium, Aomori City, Japan | Lost WBA & The Ring super featherweight titles |
| 73 | Win | 61–8–4 | Ricardo Arredondo | UD | 15 (15) | 1971-03-04 | Nihon University Auditorium, Tokyo, Japan | Retained WBA & The Ring super featherweight titles |
| 72 | Win | 60–8–4 | Shozo Saijo | SD | 10 (10) | 1970-12-03 | Nihon University Auditorium, Tokyo, Japan | |
| 71 | Win | 59–8–4 | Antonio Amaya | UD | 15 (15) | 1970-08-23 | Korakuen Hall, Tokyo, Japan | Retained WBA & The Ring super featherweight titles |
| 70 | Win | 58–8–4 | Ray Adigun | UD | 10 (10) | 1970-06-21 | Korakuen Hall, Tokyo, Japan | |
| 69 | Draw | 57–8–4 | Hiroshi Shoji | SD | 10 (10) | 1970-02-15 | Tokushima City, Japan | |
| 68 | Win | 57–8–3 | Carlos Cañete | UD | 15 (15) | 1969-11-09 | Nihon University Auditorium, Tokyo, Japan | Retained WBA & The Ring super featherweight titles |
| 67 | Win | 56–8–3 | Victor Ramos | KO | 2 (10) | 1969-07-07 | Japan | |
| 66 | Win | 55–8–3 | Antonio Amaya | SD | 15 (15) | 1969-04-06 | Kokugikan, Tokyo, Japan | Retained WBA & The Ring super featherweight titles |
| 65 | Win | 54–8–3 | Turori George | UD | 10 (10) | 1969-01-27 | Korakuen Hall, Tokyo, Japan | |
| 64 | Win | 53–8–3 | Jaime Valladares | UD | 15 (15) | 1968-10-05 | Nippon Budokan, Tokyo, Japan | Retained WBA, WBC & The Ring super featherweight titles |
| 63 | Loss | 52–8–3 | Rubén Navarro | MD | 10 (10) | 1968-08-26 | Korakuen Hall, Tokyo, Japan | |
| 62 | Win | 52–7–3 | Ulises Botero | KO | 6 (10) | 1968-07-21 | Japan | |
| 61 | Loss | 51–7–3 | Mando Ramos | UD | 10 (10) | 1968-06-20 | Olympic Auditorium, Los Angeles, California, U.S. | |
| 60 | Draw | 51–6–3 | Rene Barrientos | MD | 15 (15) | 1968-03-30 | Nippon Budokan, Tokyo, Japan | Retained WBA, WBC & The Ring super featherweight titles |
| 59 | Win | 51–6–2 | Yoshiaki Numata | KO | 12 (15) | 1967-12-14 | Kokugikan, Tokyo, Japan | Won WBA, WBC & The Ring super featherweight titles |
| 58 | Win | 50–6–2 | Ki Jin Song | KO | 8 (10) | 1967-10-16 | Japan | |
| 57 | Win | 49–6–2 | Chang Soo Yun | KO | 7 (10) | 1967-09-04 | Japan | |
| 56 | Win | 48–6–2 | Dony Tesorio | UD | 10 (10) | 1967-06-26 | Japan | |
| 55 | Win | 47–6–2 | Takao Mitsuhashi | UD | 10 (10) | 1967-05-08 | Japan | Retained Japanese featherweight title |
| 54 | Win | 46–6–2 | Vicente Milan Derado | UD | 10 (10) | 1967-02-27 | Korakuen Hall, Tokyo, Japan | |
| 53 | Win | 45–6–2 | Kang Il Suh | UD | 10 (10) | 1967-02-02 | Korakuen Hall, Tokyo, Japan | |
| 52 | Win | 44–6–2 | Chun Kyo Shin | PTS | 10 (10) | 1967-01-16 | Japan | |
| 51 | Win | 43–6–2 | Del Kid Rosario | PTS | 10 (10) | 1966-11-28 | Japan | |
| 50 | Win | 42–6–2 | Sumio Nobata | PTS | 10 (10) | 1966-11-10 | Tokoname, Japan | Retained Japanese featherweight title |
| 49 | Win | 41–6–2 | Nobuo Chiba | PTS | 10 (10) | 1966-10-10 | Japan | Retained Japanese featherweight title |
| 48 | Win | 40–6–2 | Bobby Valdez | RTD | 7 (10) | 1966-08-18 | Olympic Auditorium, Los Angeles, California, U.S. | |
| 47 | Win | 39–6–2 | Delfino Rosales | KO | 9 (10) | 1966-07-31 | Culiacan, Mexico | |
| 46 | Draw | 38–6–2 | Aurelio Cazares | PTS | 10 (10) | 1966-07-10 | Sinaloa de Leyva, Mexico | |
| 45 | Loss | 38–6–1 | Pedro Gómez | TKO | 7 (10) | 1966-06-24 | Nuevo Circo, Caracas, Venezuela | |
| 44 | Loss | 38–5–1 | Freddie Rengifo | PTS | 10 (10) | 1966-05-30 | Nuevo Circo, Caracas, Venezuela | |
| 43 | Draw | 38–4–1 | Jaime Valladares | PTS | 10 (10) | 1966-05-14 | Quito, Ecuador | |
| 42 | Win | 38–4 | Hiroshi Mori | PTS | 10 (10) | 1966-03-31 | Japan | |
| 41 | Win | 37–4 | Shigeo Shioyama | PTS | 10 (10) | 1966-02-28 | Japan | Retained Japanese featherweight title |
| 40 | Win | 36–4 | Katsutoshi Aoki | PTS | 10 (10) | 1966-01-27 | Japan | |
| 39 | Win | 35–4 | Orlando Medina | PTS | 10 (10) | 1965-12-09 | Japan | |
| 38 | Win | 34–4 | Sugar Cane Carreon | PTS | 10 (10) | 1965-10-29 | Japan | |
| 37 | Win | 33–4 | Hyun Kim | PTS | 10 (10) | 1965-09-23 | Japan | |
| 36 | Win | 32–4 | Atsushi Gunji | PTS | 10 (10) | 1965-08-30 | Japan | Retained Japanese featherweight title |
| 35 | Win | 31–4 | Kunio Sakata | PTS | 10 (10) | 1965-07-18 | Japan | |
| 34 | Win | 30–4 | Jong Tae Lim | PTS | 10 (10) | 1965-06-27 | Ichinomiya, Japan | |
| 33 | Win | 29–4 | Shigeo Shioyama | PTS | 10 (10) | 1965-05-09 | Japan | Retained Japanese featherweight title |
| 32 | Win | 28–4 | Soo Bok Kwon | KO | 7 (10) | 1965-03-01 | Japan | |
| 31 | Win | 27–4 | Yuji Masuko | UD | 10 (10) | 1965-01-18 | Japan | Retained Japanese featherweight title |
| 30 | Win | 26–4 | Hyun Kim | PTS | 10 (10) | 1964-12-12 | Maebashi, Japan | |
| 29 | Win | 25–4 | Atsushi Gunji | PTS | 10 (10) | 1964-11-09 | Japan | |
| 28 | Win | 24–4 | Yuji Masuko | PTS | 10 (10) | 1964-09-28 | Japan | Won Japanese featherweight title |
| 27 | Win | 23–4 | Dong Chun Lee | PTS | 10 (10) | 1964-07-09 | Japan | |
| 26 | Win | 22–4 | Kwang Joo Lee | PTS | 10 (10) | 1964-06-01 | Japan | |
| 25 | Win | 21–4 | Mitsunori Seki | PTS | 10 (10) | 1964-04-26 | Japan | |
| 24 | Win | 20–4 | Porte Villa | PTS | 10 (10) | 1964-04-13 | Japan | |
| 23 | Loss | 19–4 | Eduardo Guerrero | PTS | 10 (10) | 1964-02-20 | Japan | |
| 22 | Loss | 19–3 | Kang Il Suh | PTS | 10 (10) | 1964-01-26 | Osaka, Japan | |
| 21 | Loss | 19–2 | Johnny Jamito | RTD | 6 (10) | 1963-11-02 | Araneta Coliseum, Quezon City, Philippines | |
| 20 | Loss | 19–1 | Manzo Kikuchi | PTS | 10 (10) | 1963-08-19 | Japan | For vacant Japanese featherweight title |
| 19 | Win | 19–0 | Toshio Shibazaki | PTS | 8 (8) | 1963-07-30 | Japan | |
| 18 | Win | 18–0 | Dommy Balajada | UD | 10 (10) | 1963-06-24 | Japan | |
| 17 | Win | 17–0 | Yuji Masuko | KO | 2 (10) | 1963-05-13 | Japan | |
| 16 | Win | 16–0 | Teruo Hino | PTS | 8 (8) | 1963-05-02 | Japan | |
| 15 | Win | 15–0 | Kazuhiro Furuya | MD | 6 (6) | 1963-04-04 | Kokugikan, Tokyo, Japan | |
| 14 | Win | 14–0 | Hideo Fukuchi | UD | 6 (6) | 1963-03-18 | Japan | |
| 13 | Win | 13–0 | Isamu Kato | UD | 6 (6) | 1963-02-19 | Japan | |
| 12 | Win | 12–0 | Tsutomu Yoshida | UD | 6 (6) | 1963-01-28 | Japan | |
| 11 | Win | 11–0 | Noriyoshi Toyoshima | UD | 6 (6) | 1962-12-31 | Japan | |
| 10 | Win | 10–0 | Hisao Omori | UD | 4 (4) | 1962-12-15 | Japan | |
| 9 | Win | 9–0 | Saburo Yanagi | SD | 4 (4) | 1962-11-29 | Japan | |
| 8 | Win | 8–0 | Kazuo Hayasako | UD | 4 (4) | 1962-11-07 | Korakuen Gym, Tokyo, Japan | |
| 7 | Win | 7–0 | Masayoshi Otake | UD | 4 (4) | 1962-10-16 | Japan | |
| 6 | Win | 6–0 | Kazuyoshi Ohashi | UD | 4 (4) | 1962-09-25 | Japan | |
| 5 | Win | 5–0 | Kiyokazu Komura | UD | 4 (4) | 1962-09-11 | Japan | |
| 4 | Win | 4–0 | Saburo Yanagi | UD | 4 (4) | 1962-08-20 | Japan | |
| 3 | Win | 3–0 | Yukichi Takase | UD | 4 (4) | 1962-07-30 | Japan | |
| 2 | Win | 2–0 | Michio Ishii | TKO | 2 (4) | 1962-07-13 | Japan | |
| 1 | Win | 1–0 | Hisatsugu Kyoya | MD | 4 (4) | 1962-07-02 | Korakuen Gym, Tokyo, Japan | |

## Titles in boxing
### Major world titles

* WBA super featherweight champion (130 lbs)
* WBC super featherweight champion (130 lbs)

### The Ring magazine titles

* The Ring super featherweight champion (130 lbs)

### Regional/International titles

* Japanese featherweight champion (126 lbs)

### Undisputed titles

* Undisputed super featherweight champion