Open Boxing

WBO minimumweight world title

Covers world title bouts since 1989. Current champion: Oscar Collazo, since 27th May 2023.

World title bouts
67
Champions
23
Longest reign (Ivan Calderon, 2003–2007)
4 years, 3 months
Most successful defences in one reign (Ivan Calderon, 2003–2007)
12

Current champion

Oscar CollazoSince 27th May 2023 · 3 years, 5 months · 7 successful defences

Reigns and world title bouts

Jan 2022 – Jan 2027

WBO
Masataka TaniguchiJerusalemOscar Collazo
AprJulOct2023AprJulOct2024AprJulOct2025AprJulOct2026AprJulOct2027
1990200020102020

World title bout

Reigns by length

  1. 1Ivan CalderonWBO2003–20074 years, 3 months · 12 successful defences
  2. 2Alex SanchezWBO1993–19973 years, 8 months · 6 successful defences
  3. 3Oscar CollazoWBO2023–present3 years, 5 months · 7 successful defences
  4. 4Donnie NietesWBO2007–20113 years, 4 months · 4 successful defences
  5. 5Rafael TorresWBO1989–19933 years, 4 months · 1 successful defence
  6. 6Kermin GuardiaWBO1998–20013 years · 3 successful defences
  7. 7Wilfredo MendezWBO2019–20212 years, 3 months · 2 successful defences
  8. 8Moises FuentesWBO2011–20131 year, 7 months · 2 successful defences
  9. 9Victorio SaludarWBO2018–20191 year, 1 month · 1 successful defence
  10. 10Masataka TaniguchiWBO2021–20231 year · 1 successful defence
  11. 11Merlito SabilloWBO2013–201411 months · 1 successful defence
  12. 12Ryuya YamanakaWBO2017–201810 months · 1 successful defence
  13. 13Kosei TanakaWBO2015–201610 months · 1 successful defence
  14. 14Jorge MataWBO2002–20038 months · 1 successful defence
  15. 15Francisco Rodriguez JrWBO2014–20148 months · 1 successful defence
  16. 16Katsunari TakayamaWBO2016–20177 months · 0 successful defences
  17. 17Paul WeirWBO1993–19937 months · 1 successful defence
  18. 18Raul GarciaWBO2011–20116 months · 1 successful defence
  19. 19Eric JamiliWBO1997–19985 months · 0 successful defences
  20. 20Melvin JerusalemWBO2023–20234 months · 0 successful defences
  21. 21Tatsuya FukuharaWBO2017–20174 months · 0 successful defences
  22. 22Katsunari TakayamaWBO2014–20152 months · 0 successful defences
  23. 23Eduardo Ray MarquezWBO2003–20031 month · 0 successful defences
  24. 24Ricardo LopezWBO1997–19972 days · 0 successful defences

Timeline of world title events

  1. 1989

  2. Rafael Torres beats Yamil Caraballo via unanimous decision 12/12

    Minimumweight · WBONew champion

  1. 1990

  2. Rafael Torres beats Husni Ray via split decision 12/12

    Minimumweight · WBO

  3. 1993

  4. Rafael Torres’s reign as the WBO minimumweight world champion ends

    Minimumweight · WBO

  5. Paul Weir beats Fernando Martinez via knockout 7/12

    Minimumweight · WBONew champion

  6. Paul Weir beats Lindi Memani via unanimous decision 12/12

    Minimumweight · WBO

  7. Paul Weir’s reign as the WBO minimumweight world champion ends

    Minimumweight · WBO

  8. Alex Sanchez beats Orlando Malone via knockout 1/12

    Minimumweight · WBONew champion

  9. 1994

  10. Alex Sanchez beats Arturo Mayan via knockout 1/12

    Minimumweight · WBO

  11. Alex Sanchez beats Carlos Juan Rodriguez via knockout 1/12

    Minimumweight · WBO

  12. Alex Sanchez beats Oscar Andrade via knockout 4/12

    Minimumweight · WBO

  13. 1995

  14. Alex Sanchez beats Rafael Orozco via unanimous decision 12/12

    Minimumweight · WBO

  15. Alex Sanchez beats Tomas Rivera via unanimous decision 12/12

    Minimumweight · WBO

  16. 1997

  17. Alex Sanchez beats Jose Burgos via unanimous decision 12/12

    Minimumweight · WBO

  18. Ricardo Lopez beats Alex Sanchez via knockout 5/12

    Minimumweight · WBC and WBONew WBO champion

  19. Ricardo Lopez’s reign as the WBO minimumweight world champion ends

    Minimumweight · WBO

  20. Eric Jamili beats Mickey Cantwell via knockout 8/12

    Minimumweight · WBONew champion

  21. 1998

  22. Kermin Guardia beats Eric Jamili via corner retirement 5/12

    Minimumweight · WBONew champion

  23. 1999

  24. Kermin Guardia beats Eric Jamili via unanimous decision 12/12

    Minimumweight · WBO

  25. Kermin Guardia beats Luis Alberto Lazarte via split decision 12/12

    Minimumweight · WBO

  1. 2001

  2. Kermin Guardia beats Juan Alfonso Keb Baas via unanimous decision 12/12

    Minimumweight · WBO

  3. Kermin Guardia’s reign as the WBO minimumweight world champion ends

    Minimumweight · WBO

  4. 2002

  5. Jorge Mata becomes the WBO minimumweight world champion

    Minimumweight · WBONew champion

  6. Jorge Mata beats Jairo Arango via unanimous decision 12/12

    Minimumweight · WBO

  7. 2003

  8. Eduardo Ray Marquez beats Jorge Mata via knockout 11/12

    Minimumweight · WBONew champion

  9. Ivan Calderon beats Eduardo Ray Marquez via technical decision 9/12

    Minimumweight · WBONew champion

  10. Ivan Calderon beats Lorenzo Trejo via unanimous decision 12/12

    Minimumweight · WBO

  11. Ivan Calderon beats Alex Sanchez via unanimous decision 12/12

    Minimumweight · WBO

  12. 2004

  13. Ivan Calderon beats Edgar Cardenas via knockout 11/12

    Minimumweight · WBO

  14. Ivan Calderon beats Roberto Carlos Leyva via unanimous decision 12/12

    Minimumweight · WBO

  15. Ivan Calderon beats Carlos Fajardo via unanimous decision 12/12

    Minimumweight · WBO

  16. 2005

  17. Ivan Calderon beats Noel Tunacao via knockout 8/12

    Minimumweight · WBO

  18. Ivan Calderon beats Gerardo Verde via unanimous decision 12/12

    Minimumweight · WBO

  19. Ivan Calderon beats Daniel Reyes via unanimous decision 12/12

    Minimumweight · WBO

  20. 2006

  21. Ivan Calderon beats Isaac Bustos via unanimous decision 12/12

    Minimumweight · WBO

  22. Ivan Calderon beats Miguel Tellez via knockout 9/12

    Minimumweight · WBO

  23. Ivan Calderon beats Jose Luis Varela via unanimous decision 12/12

    Minimumweight · WBO

  24. 2007

  25. Ivan Calderon beats Ronald Barrera via split decision 12/12

    Minimumweight · WBO

  26. Ivan Calderon’s reign as the WBO minimumweight world champion ends

    Minimumweight · WBO

  27. Donnie Nietes beats Somporn Seeta via unanimous decision 12/12

    Minimumweight · WBONew champion

  28. 2008

  29. Donnie Nietes beats Eddy Castro via knockout 2/12

    Minimumweight · WBO

  30. 2009

  31. Donnie Nietes beats Erik Ramirez via unanimous decision 12/12

    Minimumweight · WBO

  32. Donnie Nietes beats Manuel Vargas via split decision 12/12

    Minimumweight · WBO

  1. 2010

  2. Donnie Nietes beats Mario Rodriguez via unanimous decision 12/12

    Minimumweight · WBO

  3. 2011

  4. Donnie Nietes’s reign as the WBO minimumweight world champion ends

    Minimumweight · WBO

    Raul Garcia becomes the WBO minimumweight world champion

    Minimumweight · WBONew champion

  5. Raul Garcia beats Rommel Asenjo via knockout 3/12

    Minimumweight · WBO

  6. Moises Fuentes beats Raul Garcia via split decision 12/12

    Minimumweight · WBONew champion

  7. 2012

  8. Moises Fuentes beats Julio Cesar Felix via knockout 1/12

    Minimumweight · WBO

  9. Moises Fuentes beats Ivan Calderon via knockout 5/12

    Minimumweight · WBO

  10. 2013

  11. Moises Fuentes’s reign as the WBO minimumweight world champion ends

    Minimumweight · WBO

    Merlito Sabillo becomes the WBO minimumweight world champion

    Minimumweight · WBONew champion

  12. Merlito Sabillo beats Jorle Estrada via knockout 9/12

    Minimumweight · WBO

  13. Merlito Sabillo and Carlos Buitrago draw via split decision 12/12

    Minimumweight · WBO

  14. 2014

  15. Francisco Rodriguez Jr beats Merlito Sabillo via knockout 10/12

    Minimumweight · WBONew champion

  16. Francisco Rodriguez Jr beats Katsunari Takayama via unanimous decision 12/12

    Minimumweight · IBF and WBO

  17. Francisco Rodriguez Jr’s reign as the WBO minimumweight world champion ends

    Minimumweight · WBO

  18. Katsunari Takayama beats Go Odaira via knockout 7/12

    Minimumweight · IBF and WBONew WBO champion

  19. 2015

  20. Katsunari Takayama’s reign as the WBO minimumweight world champion ends

    Minimumweight · WBO

  21. Kosei Tanaka beats Julian Yedras via unanimous decision 12/12

    Minimumweight · WBONew champion

  22. Kosei Tanaka beats Victorio Saludar via knockout 6/12

    Minimumweight · WBO

  23. 2016

  24. Kosei Tanaka’s reign as the WBO minimumweight world champion ends

    Minimumweight · WBO

  25. Katsunari Takayama beats Riku Kano via technical decision 6/12

    Minimumweight · WBONew champion

  26. 2017

  27. Katsunari Takayama’s reign as the WBO minimumweight world champion ends

    Minimumweight · WBO

    Tatsuya Fukuhara becomes the WBO minimumweight world champion

    Minimumweight · WBONew champion

  28. Ryuya Yamanaka beats Tatsuya Fukuhara via unanimous decision 12/12

    Minimumweight · WBONew champion

  29. 2018

  30. Ryuya Yamanaka beats Moises Calleros via corner retirement 8/12

    Minimumweight · WBO

  31. Victorio Saludar beats Ryuya Yamanaka via unanimous decision 12/12

    Minimumweight · WBONew champion

  32. 2019

  33. Victorio Saludar beats Masataka Taniguchi via unanimous decision 12/12

    Minimumweight · WBO

  34. Wilfredo Mendez beats Victorio Saludar via unanimous decision 12/12

    Minimumweight · WBONew champion

  35. Wilfredo Mendez beats Axel Aragon Vega via technical decision 7/12

    Minimumweight · WBO

  1. 2020

  2. Wilfredo Mendez beats Gabriel Mendoza via knockout 9/12

    Minimumweight · WBO

  3. 2021

  4. Masataka Taniguchi beats Wilfredo Mendez via technical knockout 11/12

    Minimumweight · WBONew champion

  5. 2022

  6. Masataka Taniguchi beats Kai Ishizawa via technical knockout 11/12

    Minimumweight · WBO

  7. 2023

  8. Melvin Jerusalem beats Masataka Taniguchi via technical knockout 2/12

    Minimumweight · WBONew champion

  9. Oscar Collazo beats Melvin Jerusalem via corner retirement 7/12

    Minimumweight · WBONew champion

  10. Oscar Collazo beats Garen Diagan via corner retirement 6/12

    Minimumweight · WBO

  11. 2024

  12. Oscar Collazo beats Reyneris Gutierrez via technical knockout 3/12

    Minimumweight · WBO

  13. Oscar Collazo beats Gerardo Zapata via unanimous decision 12/12

    Minimumweight · WBO

  14. Oscar Collazo beats Knockout CP Freshmart via technical knockout 7/12

    Minimumweight · WBA Super, WBO and The Ring

  15. 2025

  16. Oscar Collazo beats Edwin Cano Hernandez via knockout 5/12

    Minimumweight · WBA Super, WBO and The Ring

  17. Oscar Collazo beats Jayson Vayson via knockout 7/12

    Minimumweight · WBA Super, WBO and The Ring

    Source: Óscar Collazo retains minimumweight crown with knockout(opens in a new tab), World Boxing Association, Rowerth Goncalves,

    1 more reference

  18. 2026

  19. Oscar Collazo beats Jesus Haro via corner retirement 6/12

    Minimumweight · WBA Super, WBO and The Ring

    Source: Oscar Collazo dominates, stops Jesus Haro in six rounds(opens in a new tab), The Ring, Manouk Akopyan,