John Riel Casimero
John Riel Casimero held the WBO bantamweight world title, the IBF flyweight world title and the IBF light flyweight world title between 2012 and 2022. Casimero first became a world champion aged 22 with the IBF light flyweight world title.
- World title bouts
- 11
- Record in world title bouts (won–lost)
- 9–2
- World titles held
- 3
- Longest world title reign (WBO bantamweight, 2019–2022)
- 2 years, 5 months
Timeline of world title events
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2022
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John Riel Casimero’s reign as the WBO bantamweight world champion ends
Bantamweight · WBO
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2021
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The Ring magazine rates John Riel Casimero No. 2 at bantamweight in its annual ratings
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John Riel Casimero beats Guillermo Rigondeaux via split decision 12/12
Bantamweight · WBO
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2020
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The Ring magazine rates John Riel Casimero No. 3 at bantamweight in its annual ratings
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John Riel Casimero beats Duke Micah via knockout 3/12
Bantamweight · WBO
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2019
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The Ring magazine rates John Riel Casimero No. 3 at bantamweight in its annual ratings
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John Riel Casimero beats Zolani Tete via knockout 3/12
Bantamweight · WBO
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2016
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The Ring magazine rates John Riel Casimero No. 2 at flyweight in its annual ratings
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John Riel Casimero’s reign as the IBF flyweight world champion ends
Flyweight · IBF
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John Riel Casimero beats Charlie Edwards via knockout 10/12
Flyweight · IBF
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John Riel Casimero beats Amnat Ruenroeng via knockout 4/12
Flyweight · IBF
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2015
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The Ring magazine rates John Riel Casimero No. 10 at flyweight in its annual ratings
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Amnat Ruenroeng beats John Riel Casimero via unanimous decision 12/12
Flyweight · IBF
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2014
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The Ring magazine rates John Riel Casimero No. 10 at flyweight in its annual ratings
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John Riel Casimero beats Mauricio Fuentes via knockout 1/12
Light Flyweight · IBF
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John Riel Casimero’s reign as the IBF light flyweight world champion ends
Light Flyweight · IBF
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2013
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The Ring magazine rates John Riel Casimero No. 5 at light flyweight in its annual ratings
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John Riel Casimero beats Felipe Salguero via knockout 11/12
Light Flyweight · IBF
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John Riel Casimero beats Luis Alberto Rios via unanimous decision 12/12
Light Flyweight · IBF
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The Ring magazine rates John Riel Casimero No. 8 at light flyweight in its annual ratings
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2012
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John Riel Casimero beats Pedro Guevara via split decision 12/12
Light Flyweight · IBF
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John Riel Casimero becomes IBF light flyweight champion
Light Flyweight · IBF
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2011
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Moruti Mthalane beats John Riel Casimero via knockout 5/12
Flyweight · IBF
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2009
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The Ring magazine rates John Riel Casimero No. 7 at light flyweight in its annual ratings