John Riel Casimero

Professional boxer

Current rankings:

In the current world rankings, John Riel Casimero is #4 in the WBO Super Bantamweight rankings, and is also listed at IBF #11. He dropped 1 place from #10 with the IBF in September 2026.

Current rankings

WBO

Super Bantamweight

#4 Ranked Contender

(September 2026)

IBF

Super Bantamweight

#11 Ranked Contender -1

(September 2026)

RING

Bantamweight

Previously #1 Ranked Contender

(July 2022)

WBA

Super Flyweight

Previously #6 Ranked Contender

(August 2017)

WBC

Super Bantamweight

Previously #16 Ranked Contender

(October 2025)

Ranking history summary

Summary from monthly sanctioning-body lists in our database (not a fight record).

Ranking time span

October 2008 – September 2026

Time ranked

16 years 5 months

Time as world champion

3 years 11 months

World titles held

Bantamweight

WBO Interim ChampionMay 2019 – November 2019
WBO Champion30 November 2019 – 3 May 2022

Flyweight

IBF Champion28 May 2016 – 20 December 2016

Light Flyweight

WBO Interim ChampionJanuary 2010 – July 2010

By division

Division	First entered rankings	Most recently in rankings	Time ranked
Super Bantamweight	December 2022	September 2026	3 years 3 months
Bantamweight	February 2019	September 2022	3 years 7 months
Super Flyweight	December 2016	February 2019	1 year 6 months
Flyweight	December 2011	March 2017	3 years 1 month
Light Flyweight	October 2008	November 2014	6 years 2 months

Time ranked counts distinct months this fighter appears on a rankings list for that division. If they drop out and return later, months off the ranking lists are not included.

John Riel Casimero

Current rankings

Ranking history summary

World titles held

Bantamweight

Flyweight

Light Flyweight

By division

Related boxers

Ranking history summary

World titles held

Bantamweight

Flyweight

Light Flyweight

By division

Related boxers