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.
Interim champion since defeating Rusalee Kaset Phattana on 10-04-10; status promoted; vacant in 12-07; possibly stripped of the title after losing a non-title match to Etō Taiki on 12-07-09.
Arthur Villanueva
2013-07-13
Manila, PHI
Defeats Arturo Badillo; also wins WBO International Title on 13-10-26; vacates the Asia Pacific title in 14-01.
Rex Tso
2014-02-22
Macao, CHN
Defeats Matsuyama Mako; also wins WBO International Title on 15-03-07; vacates the Asia Pacific title in 15-04.
Petchbarngborn KokietGym (Karoon Jarupianlerd)
2015-03
Interim champion since defeating Fernando Lumacad on 14-07-25; status promoted; also holds PABA Title; vacates the WBO title in 16-04.
Rex Tso [2]
2016-05-14
Hong Kong, CHN
Defeats Bae Young-Gil; also holds ABCO Title; vacates in 16-07.
Mukai Hirofumi
2016-11-23
Ōsaka, JPN
Defeats Inthanon Sithchamuang.
Rex Tso [3]
2017-03-11
Hong Kong, CHN
Vacates in 17-04.
Mukai Hirofumi [2]
2017-12-03
Ōsaka, JPN
Defeats Inthanon Sithchamuang; vacant in 18-05.
Funai Ryūichi
2018-06-14
Tōkyō, JPN
Defeats Warlito Parrenas; vacates in 19-04.
Froilan Saludar
2019-09-21
Tōkyō, JPN
Defeats Murachi Tsubasa.
Fukunaga Ryōji
2020-02-14
Tōkyō, JPN
Also wins Japanese and vacant OPBF titles on 20-12-14; loses his bid for WBO world title on 21-12-31.
Hashizume Masayoshi
2022-02-28
Tōkyō, JPN
Defeats Furutani Akio and also wins vacant OPBF Title.
Tanaka Kōsei
2022-06-29
Tōkyō, JPN
Vacates on 22-08-23.
Murachi Tsubasa
2022-10-30
Fuji, Shizuoka, JPN
Defeats Wilbert Berondo; vacates on 22-12-25 to focus on winning OPBF and Japanese titles.
