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.
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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.
ONE World Submission Grappling Flyweight Title [61.2kg/135lb] (as of 2024-09-05)
* Bolded letters in the competitor's name, if any, indicate the surname/family name.
Mikey Musumeci
2022-10-01
Kallang, SIN
Defeats Cleber Souza to become the first champion; stripped on 24-09-05 for failing to make the weight limit for his title defense against Bebeto Oliveira.