| Rigoberto Riasco | |
| Realname: | Rigoberto Rodrigo Riasco Esquivel |
| Birth Date: | 11 January 1953 |
| Birth Place: | Panama City, Panama |
| Death Place: | Panama City, Panama |
| Nickname: | El Pequeño Veneno ("The Little Poison") |
| Weight: | |
| Height: | 5 ft 7 in |
| Reach: | 69 in |
| Style: | Orthodox |
| Total: | 40 |
| Wins: | 26 |
| Ko: | 13 |
| Losses: | 9 |
| Draws: | 4 |
| No Contests: | 1 |
Rigoberto Riasco (11 January 1953 – 29 August 2022) also known as "Little Poison", was a Panamanian professional boxer who competed from 1968 to 1982. He was the Lineal and WBC Super bantamweight champion in 1976. Riasco defeated such men as Dong Kyun Yum, Leonel Hernández, Rafael Ortega, Waruinge Nakayama, Luis Ávila, Santos Luis Rivera, Seiji "Flipper" Uehara, and Sanjo Takemori.
Riasco made his professional debut on 25 August 1968 with a four-round draw with Carlos Mendoza and after winning the featherweight national championship, he fought Alexis Argüello, who defeated him with a second round technical knockout.[1]
After his defeat, he defeated previously unbeaten Luis Ávila and Puerto Rican Santos Luis Rivera, who had knocked him out in the first round in Puerto Rico. Those victories earned him the chance to fight for the newly created WBC championship belt.
On 3 April 1976, Riasco defeated Kenyan Waruinge Nakayama for the WBC and Lineal Super bantamweight titles.[2] He made two successful defenses against Livio Nolasco and Dong Kyun Yum before losing his belt in his third defense against Japanese Royal Kobayashi in Tokyo on October 9, 1976.
He announced his retirement in 1981, but returned later. After three consecutive defeats, Riasco officially announced his retirement in 1982. He left with a record of 29 wins with 13 KOs, 9 losses, and 4 draws.
| Result | Record | Opponent | Type | Round, time | Date | Location | Notes | ||
|---|---|---|---|---|---|---|---|---|---|
| 40 | Loss | 26–9–4 | Mário Miranda | KO | 4 (12) | Mar 19, 1982 | |||
| 39 | Loss | 26–8–4 | Carlos Núñez | DQ | 9 (10) | Jan 16, 1982 | |||
| 38 | Loss | 26–7–4 | Il Yang | PTS | 10 | Dec 19, 1981 | |||
| 37 | Win | 26–6–4 | Jose Santana | PTS | 10 | Aug 15, 1981 | |||
| 36 | Win | 25–6–4 | Pascual Patterson | MD | 10 | Jul 25, 1981 | |||
| 35 | Loss | 24–6–4 | Kazuo Kobayashi | KO | 8 (15) | Oct 9, 1976 | |||
| 34 | Win | 24–5–4 | Yum Dong-kyun | SD | 15 | Aug 1, 1976 | |||
| 33 | Win | 23–5–4 | Livio Nolasco | TKO | 10 (15) | Jun 12, 1976 | |||
| 32 | Win | 22–5–4 | Waruinge Nakayama | RTD | 8 (15) | Apr 3, 1976 | |||
| 31 | Win | 21–5–4 | Santos Luis Rivera | TKO | 7 (10) | Nov 15, 1975 | |||
| 30 | Win | 20–5–4 | Luis Ávila | UD | 12 | Aug 23, 1975 | |||
| 29 | Loss | 19–5–4 | Alexis Argüello | TKO | 2 (15) | May 31, 1975 | |||
| 28 | Win | 19–4–4 | Raul Silva | TKO | 10 (10) | Mar 9, 1975 | |||
| 27 | Win | 18–4–4 | Nestor Herrera | TKO | 1 (?) | Feb 19, 1975 | |||
| 26 | Win | 17–4–4 | Renan Marota | UD | 10 | Jan 25, 1975 | |||
| 25 | Win | 16–4–4 | Flipper Uehara | PTS | 10 | Oct 21, 1974 | |||
| 24 | Draw | 15–4–4 | Sanjo Takemori | PTS | 10 | Jun 24, 1974 | |||
| 23 | Win | 15–4–3 | Jesus Estrada | TKO | 4 (10) | May 11, 1974 | |||
| 22 | Win | 14–4–3 | Kid Clay | PTS | 10 | Mar 2, 1974 | |||
| 21 | Win | 13–4–3 | Rafael Ortega | UD | 12 | Dec 15, 1973 | |||
| 20 | Win | 12–4–3 | Vicente Blanco | TKO | 6 (10) | Sep 14, 1973 | |||
| 19 | Loss | 11–4–3 | Santos Luis Rivera | KO | 1 (10) | Aug 4, 1973 | |||
| 18 | Win | 11–3–3 | Leonel Hernandez | UD | 10 | Jun 2, 1973 | |||
| 17 | Win | 10–3–3 | Jose Angel Herrera | SD | 10 | May 3, 1973 | |||
| 16 | Win | 9–3–3 | Miguel Espinosa | PTS | 10 | Nov 18, 1972 | |||
| 15 | Win | 8–3–3 | Enrique Alonso | KO | 4 (12) | Oct 28, 1972 | |||
| 14 | Win | 7–3–3 | Alberto Herrera | TKO | 5 (10) | Aug 18, 1972 | |||
| 13 | Loss | 6–3–3 | Enrique Alonso | UD | 10 | Apr 29, 1972 | |||
| 12 | Loss | 6–2–3 | Jose Luis Meza | UD | 10 | Jan 30, 1971 | |||
| 11 | Win | 6–1–3 | Francisco Amaro | TKO | 6 (10) | Nov 24, 1970 | |||
| 10 | Loss | 5–1–3 | Jorge Reyes | PTS | 10 | Oct 10, 1970 | |||
| 9 | Win | 5–0–3 | Humberto Arboleda | TKO | 3 (6) | May 24, 1970 | |||
| 8 | Win | 4–0–3 | Carlos Mendoza | KO | 6 (6) | Dec 13, 1969 | |||
| 7 | Draw | 3–0–3 | Enrique Warren | PTS | 6 | Oct 5, 1969 | |||
| 6 | style=background:#DDD | NC | 3–0–2 | Catalino Alvarado | NC | 4 (6) | Aug 10, 1969 | ||
| 5 | Win | 3–0–2 | Manuel Jimenez | UD | 4 | Mar 2, 1969 | |||
| 4 | Draw | 2–0–2 | Manuel Jimenez | PTS | 4 | Feb 9, 1969 | |||
| 3 | Win | 2–0–1 | Manuel Jimenez | KO | 1 (4) | Dec 15, 1968 | |||
| 2 | Win | 1–0–1 | Santos Pena | UD | 4 | Nov 30, 1968 | |||
| 1 | Draw | 0–0–1 | Carlos Mendoza | PTS | 4 | Aug 25, 1968 |
Riasco died on August 22, 2022, at the age of 69.[3] [4]
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