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The first title match in this division was in 1980, when the World Boxing Council responded to pressure from Asian and Latin American members who felt the difference between the flyweight limit and the bantamweight limit was too significant. Rafael Orono won the inaugural title in February of that year by defeating Seung-Hoon Lee. The World Boxing Association followed suit in 1981 when Gustavo Ballas won the vacant title by knocking out Sok-Chul Baek. The first International Boxing Federation champion was Ju-Do Chun, who won the belt in 1983 with a knockout of Ken Kasugai.
|Sanctioning Body||Reign Began||Champion||Record||Defenses|
|WBA||December 10, 2016||Khalid Yafai||21-0 (14 KO)||0|
|WBC||March 18, 2017||Srisaket Sor Rungvisai||43-4-1 (38 KO)||0|
|IBF||September 3, 2016||Jerwin Ancajas||26-1-1 (16 KO)||1|
|WBO||December 30, 2014||Naoya Inoue||12-0 (10 KO)||4|