John Riel Reponte Casimero (born February 13, 1989) is a Filipino professional boxer and YouTuber, recognized as a three-division world champion. He held the IBF junior-flyweight title (2012–2013), the IBF flyweight title (2016), and the WBO bantamweight title (2019–2022). Known for his explosive style and resilience, Casimero has scored notable victories over César Canchila, Amnat Ruenroeng, Zolani Tete, and Guillermo Rigondeaux. Despite controversies outside the ring, his career achievements across multiple weight classes have established him as one of the Philippines’ most accomplished fighters in the modern era.
Bantamweight
John Riel Casimero
Ormoc City, Philippines
36Wins
5Losses
1Draws
24KOs
Career: 2007 – present
Biography
World Titles
- WBO WBO World Bantamweight Won Nov 30, 2019 · Lost Aug 14, 2022 (Vacated) · TKO 3 Zolani Tete
- WBO WBO Interim Bantamweight Won Apr 20, 2019 · Lost Aug 23, 2020 (Vacated) · KO 12 Ricardo Espinoza Franco
- IBF IBF World Flyweight Won May 25, 2016 · Lost Sep 10, 2017 (Vacated) · KO 4 Amnat Ruenroeng
- IBF IBF World Light Flyweight Won Aug 4, 2012 · Lost May 3, 2015 (Vacated) · SD Pedro Guevara
- IBF IBF Interim Light Flyweight Won Feb 10, 2012 · Lost Feb 9, 2013 (Vacated) · TKO 10 Luis Alberto Lazarte
- WBO WBO Interim Light Flyweight Won Dec 19, 2009 · Lost Jul 24, 2010 (SD Loss) · SD Ramon Garcia
Regional & Other Belts
- WBO WBO Global Super Bantamweight Won May 13, 2023 · Lost May 12, 2024
- WBO WBO Asia Pacific Light Flyweight Won Oct 3, 2008 · Lost May 28, 2010
- Philippines Philippines PBF Flyweight Won Aug 23, 2008 · Lost Aug 23, 2009
Fight Record
| Date | Opponent | Result | Method | Round | Venue |
|---|---|---|---|---|---|
| Jun 6, 2026 | Luis Nery | D | TKO | 4/10 | Aichi Sky Expo, Tokoname |
| Dec 27, 2025 | Tom Mizokoshi | D | KO | 5/8 | Aichi Sky Expo, Tokoname |
| Oct 25, 2025 | Kyonosuke Kameda | D | UD | 10 | Bishkek Arena, Bishkek |
| Oct 13, 2024 | Saul Sanchez | D | TKO | 1/10 | Yokohama Budokan, Yokohama |
| Oct 12, 2023 | Yukinori Oguni | D | TD | 4/10 | Ariake Colosseum, Tokyo |
| May 13, 2023 | Fillipus Nghitumbwa | D | UD | 12 | Okada Manila Hotel and Casino, Paranaque City |
| Dec 3, 2022 | Ryo Akaho | D | KO | 2/10 | Paradise City Plaza, Incheon |
| Aug 14, 2021 | Guillermo Rigondeaux | D | SD | 12 | Dignity Health Sports Park, Carson |
| Sep 26, 2020 | Duke Micah | D | TKO | 3/12 | Mohegan Sun Casino, Uncasville |
| Nov 30, 2019 | Zolani Tete | D | TKO | 3/12 | Utilita Arena, Birmingham |
| Aug 24, 2019 | Cesar Ramirez Lora | D | KO | 10/12 | San Andres Civic & Sports Center, Manila |
| Apr 20, 2019 | Ricardo Espinoza Franco | D | KO | 12/12 | Dignity Health Sports Park, Carson |
| Feb 16, 2019 | Kenya Yamashita | D | TKO | 6/10 | SM City North EDSA Skydome, Quezon City |
| Jul 21, 2018 | Jose Pech | D | TKO | 2/6 | Casino Hipodromo Agua Caliente, Tijuana |
| Sep 16, 2017 | Jonas Sultan | D | UD | 12 | Waterfront Hotel and Casino, Cebu City |
| Jun 25, 2017 | Jecker Buhawe | D | UD | 6 | Iligan City Public Plaza, Iligan City |
| Sep 10, 2016 | Charlie Edwards | D | TKO | 10/12 | O2 Arena, Greenwich |
| May 25, 2016 | Amnat Ruenroeng | D | KO | 4/12 | Diamond Court, Beijing |
| Jun 27, 2015 | Amnat Ruenroeng | D | UD | 12 | Hua Mark Indoor Stadium, Bangkok |
| Dec 13, 2014 | Armando Santos | D | TKO | 2/12 | Salón Las Palmas, Pesqueria |
| May 3, 2014 | Mauricio Andres Fuentes Rebolledo | D | KO | 1/12 | Cebu Waterfront Hotel and Casino, Cebu City |
| Oct 26, 2013 | Felipe Salguero | D | TKO | 11/12 | Makati Coliseum, Makati City |
| Mar 16, 2013 | Luis Alberto Rios | D | UD | 12 | Megapolis Convention Center, Panama City |
| Aug 4, 2012 | Pedro Guevara | D | SD | 12 | Centro de Convenciones, Mazatlan |
| Feb 10, 2012 | Luis Alberto Lazarte | D | TKO | 10/12 | Club Once Unidos, Mar del Plata |
| Oct 15, 2011 | Roemart Sentillas | D | KO | 1/10 | Hoops Dome, Lapu-Lapu City |
| Mar 26, 2011 | Moruti Mthalane | D | TKO | 5/12 | Nasrec Indoor Arena, Johannesburg |
| Jul 24, 2010 | Ramon Garcia | D | SD | 12 | Polideportivo Centenario, Los Mochis |
| Dec 19, 2009 | Cesar Canchila | D | TKO | 11/12 | Estadio Nacional, Managua |
| May 28, 2009 | Ardin Diale | D | TKO | 8/12 | Cebu Coliseum, Cebu City |
| May 8, 2009 | Allan Ranada | D | UD | 8 | Naga Sports Complex, Naga City |
| Oct 3, 2008 | Phaiboon Chumthong | D | TKO | 5/12 | Talisay City Sports Complex, Talisay City |
| Aug 23, 2008 | Rodel Quilaton | D | UD | 10 | Alcoy Multi-Purpose Sports Complex, Alcoy, Cebu |
| Jul 17, 2008 | Roemart Sentillas | D | TKO | 3/10 | Compostela, Cebu |
| Jun 12, 2008 | Roel Honor | D | TKO | 1/8 | Baybay City Sports Complex, Baybay, Leyte |
| Apr 21, 2008 | Daryl Amoncio | D | MD | 8 | Lapu-Lapu City Auditorium, Lapu-Lapu City |
| Mar 29, 2008 | Jerome Bontog | D | KO | 3/6 | Mandaue City Plaza Square, Mandaue City |
| Jan 12, 2008 | Rogen Flores | D | TD | 6/8 | Borbon Sports Complex, Borbon, Cebu |
| Dec 16, 2007 | Dodong Zalde | D | KO | 2/6 | Carmen Sports Complex, Carmen |
| Aug 26, 2007 | Roel Honor | D | UD | 6 | Daanbantayan Sports Center, Daanbantayan, Cebu |
| Aug 16, 2007 | Andrew Pal | D | RTD | 1/4 | Alcoy Multi-Purpose Sports Complex, Alcoy, Cebu |
| Jun 3, 2007 | Lobert Bayo | D | UD | 4 | Gethsemane Parish Grounds, Mandaue City |
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Martin dares Inoue, Casimero
