Following the name of the champion(s): Indicates the number of times the competitor has held that title at that point.
[...]
Indicates a gap in the listing where title changes are not known.
<
Title was held or changed hands no later than this. In these cases, it is known that a competitor held the title at a certain time but not when he/she won it.
@
Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
#
Unofficial or disputable claims. These are usually matches that certainly took place, but where there is doubt that the competitor shown should be recognized as a true title holder. These listings are also italicized.
World Boxing Association
World Flyweight Title ["Regular Title"]
* Bolded letters in the competitor's name, if any, indicate the surname/family name.
WBO champion Brian Viloria defeats Hernán Márquez, who has vacated the WBA world title for the match, on 2012-11-17 to become the "Super" champion.
Juan Carlos Reveco
2012-11-17
Interim champion since defeating Jean Piero Pérez on 11-06-10 in Mendoza, ARG; status promoted to the "Regular" world champion on 12-11-17.
Ioka Kazuto
2015-04-22
Ōsaka, JPN
WBA announces the reduction of the world titles in each weight category in 16-01 (WBA official site, 17-12-31) although eventually adds more titles; Ioka becomes the undisputed WBA champion on 16-09-14 when Juan Francisco Estrada vacates the Super Title; Ioka vacates his title on 17-11-09 and eventually retires from boxing.
