Kim Sung-Jun (

Hangul The Korean alphabet, known as Hangul, . Hangul may also be written as following South Korea's standard Romanization. ( ) in South Korea and Chosŏn'gŭl in North Korea, is the modern official writing system for the Korean language. The let ...

: 김성준,

Hanja Hanja (Hangul: ; Hanja: , ), alternatively known as Hancha, are Chinese characters () used in the writing of Korean. Hanja was used as early as the Gojoseon period, the first ever Korean kingdom. (, ) refers to Sino-Korean vocabulary, wh ...

: 金性俊) (June 3, 1953 – February 3, 1989) was a

boxer Boxer most commonly refers to: * Boxer (boxing), a competitor in the sport of boxing *Boxer (dog), a breed of dog Boxer or boxers may also refer to: Animal kingdom * Boxer crab * Boxer shrimp, a small group of decapod crustaceans * Boxer snipe ee ...

from

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korea, Korean Peninsula and sharing a Korean Demilitarized Zone, land border with North Korea. Its western border is formed ...

. In January, 1978, he won the Orient and Pacific Boxing Federation light flyweight title. In September, 1978, Kim became the WBC

light flyweight Light flyweight, also known as junior flyweight or super strawweight, is a weight class in boxing. Professional boxing The weight limit at light flyweight in professional boxing is 108 pounds (49 kilograms). When New York legalized boxing in 1920 ...

champion with a KO win over Netrnoi Sor Vorasingh. He defended the belt three times before losing it to Shigeo Nakajima in January, 1980. In July, 1980, Kim unsuccessfully challenged

Shoji Oguma Shoji Oguma (大熊正二 born July 22, 1951 in Koriyama, Japan) is a Japanese former professional boxer who held the WBC and Lineal titles in the Flyweight division. Professional career Oguma turned pro in 1970 and in 1974 won the WBC Flyw ...

for the WBC flyweight title, losing by a split decision. After retiring, Kim experienced

dementia pugilistica Chronic traumatic encephalopathy (CTE) is a neurodegenerative disease linked to repeated trauma to the head. The encephalopathy symptoms can include behavioral problems, mood problems, and problems with thinking. The disease often gets worse o ...

and financial difficulties, and on February 3, 1989, he committed suicide by leaping off a building in

Seoul Seoul (; ; ), officially known as the Seoul Special City, is the capital and largest metropolis of South Korea.Before 1972, Seoul was the ''de jure'' capital of the Democratic People's Republic of Korea (North Korea) as stated iArticle 103 ...

External links

* 1953 births 1989 suicides World light-flyweight boxing champions World boxing champions World Boxing Council champions South Korean male boxers Suicides by jumping in South Korea Sportspeople with chronic traumatic encephalopathy Sportspeople from Busan {{Korea-boxing-bio-stub