Jung Koo Chang (장정구;張正九 born February 4 1963 in Busan) is a South Korean whom many have called that nation's greatest world boxing champion. His nickname is The Korean Hawk.
In Chang's first world title try, he lost to Hilario Zapata of Panama by a decision in 15 rounds in 1982. However, in a rematch held at Seoul, he avenged that loss and became world champion by knocking out Zapata in three rounds.
Chang then went on to establish a world record for the most defenses as a world Jr. Flyweight champion, defending the title successfully 16 times between 1983 and 1989.
Chang had a record of 38 wins, 4 losses and 1 draw, with 17 wins by knockout.
