Ryu Myung-ok
Ryu Myung-ok, is a North Korean former professional boxer. She held the WBC super-flyweight title twice between 2005 and 2009. She is just one of 20 female boxing champions to retire without a loss.
Professional career
Ryu turned professional in 2004 & compiled a record of 2–0 before facing & defeating Elizabeth Sanchez to win the inaugural WBC super-flyweight title. After losing the title due to inactivity, she would become a two-time world champion when she beat Mexican Ana María Torres for the same title. She would lose the title again due to inactivity, and has not fought since.Professional boxing record
| No. | Result | Record | Opponent | Type | Round, time | Date | Location | Notes |
| 6 | Draw | 5–0–1 | Ana María Torres | MD | 10 | 2008-04-26 | Plaza de Toros Juriquilla, Querétaro, Querétaro, Mexico | Retained WBC super-flyweight title |
| 5 | Win | 5–0 | Ana María Torres | SD | 10 | 2007-10-19 | Kaesong, North Korea | Won WBC super-flyweight title |
| 4 | Win | 4–0 | Alicia Ashley | UD | 10 | 2005-10-21 | Jungjuyoung Gymnasium, Pyongyang, North Korea | Retained WBC super-flyweight title |
| 3 | Win | 3–0 | Elizabeth Sanchez | KO | 2, 0:50 | 2005-06-28 | Pyongyang, North Korea | Won inaugural WBC super-flyweight title |
| 2 | Win | 2–0 | Mariana Juárez | TKO | 10 | 2005-03-30 | Hotel Sunrise International, Shenyang, Liaoning, China | Won |
| 1 | Win | 1–0 | Tomoko Koga | KO | 6 | 2004-10-29 | Shenyang, Liaoning, China |