WBO dünya şampiyonları listesi
Yarı Tüy Sıklet

| Boksör: | Tarih: | Yer: | Unvan   Koruma: |
| --- | --- | --- | --- |
|  Kenny Mitchell def. Julio Gervacio | Nisan 29, 1989 | San Juan, Porto Riko | 1 |
|  Valerio Nati | Aralık 9, 1989 | Teramo, İtalya | 0 |
|  Orlando Fernandez | Mayıs 12, 1990 | Sassari, İtalya | 0 |
|  Jesse Benavides | Mayıs 24, 1991 | Corpus Christi, Texas, ABD | 1 |
|  Duke McKenzie | Ekim 15, 1992 | London, İngiltere | 0 |
|  Daniel Jiménez | 9 Haziran 1993 | London, İngiltere | 4 |
|  Marco Antonio Barrera | Mart 31, 1995 | Anaheim, California, ABD | 8 |
|  Junior Jones | Kasım 22, 1996 | Tampa, Florida, ABD | 1 |
|  Kennedy McKinney | Nisan 18, 1997 | New York, New York, ABD | 0 |
| Title vacated | 1998 | McKinney vacates to fight for featherweight title. | McKinney vacates to fight for featherweight title. |
|  Marco Antonio Barrera (2) def. Richie Wenton | Ekim 31, 1998 | Atlantic City, New Jersey, ABD | 2 |
|  Erik Morales | Şubat 19, 2000 | Las Vegas, Nevada, ABD | 0 |
| Title vacated | 2000 | Morales vacates to fight at featherweight | Morales vacates to fight at featherweight |
|  Marco Antonio Barrera (3) def. Luiz Freitas | Haziran 17, 2000 | Meksika City, Meksika | 2 |
| Title vacated | Nisan 7, 2001 | Title vacated when Barrera wins the vacant IBO Featherweight title, defeating Naseem Hamed in Las Vegas, Nevada. His last defense was against Jesús Salud on Aralık 1, 2000 also in Las Vegas. | Title vacated when Barrera wins the vacant IBO Featherweight title, defeating Naseem Hamed in Las Vegas, Nevada. His last defense was against Jesús Salud on Aralık 1, 2000 also in Las Vegas. |
|  Agapito Sanchez def. Jorge Monsalvo | Haziran 23, 2001 | Las Vegas, Nevada, ABD | 1 |
| Title vacated | 2002 | Title stripped due to inactivity. Only defense was a draw against Manny Pacquiao on Nov 11, 2001 at San Francisco, Kaliforniya | Title stripped due to inactivity. Only defense was a draw against Manny Pacquiao on Nov 11, 2001 at San Francisco, Kaliforniya |
|  Joan Guzmán def. Jorge Monsalvo | Ağustos 17, 2002 | Cardiff, Galler | 2 |
| Title vacated | Temmuz 2005 | The WBO stripped Guzman of the title due to his not making weight for a defense against Marcos Licona, scheduled for Kasım 6. His last defense was against Fernando Beltran, Jr. on Nisan 22, 2005 in Hidalgo, Texas, ABD. | The WBO stripped Guzman of the title due to his not making weight for a defense against Marcos Licona, scheduled for Kasım 6. His last defense was against Fernando Beltran, Jr. on Nisan 22, 2005 in Hidalgo, Texas, ABD. |
|  Daniel Ponce de León def. Sod Looknongyangtoy | Ekim 29, 2005 | Tucson, Arizona, ABD | 6 |
|  Juan Manuel López | 7 Haziran 2008 | Atlantic City, New Jersey, ABD | 5 |
| Title vacated | Ocak 23, 2010 | Juan Manuel López vacated the title to move up to Featherweight. Last defense was on Oct 10, 2009 against Rogers Mtagwa at the Madison Square Garden, New York | Juan Manuel López vacated the title to move up to Featherweight. Last defense was on Oct 10, 2009 against Rogers Mtagwa at the Madison Square Garden, New York |
|  Wilfredo Vázquez, Jr. def. Marvin Sonsona | Şubat 27, 2010 | Bayamón, Porto Riko | 2 |
|  Jorge Arce | Mayıs 7, 2011 | MGM Grand, Las Vegas | 1 |
| Title vacated | Kasım, 2011 | Arce vacates to go down to bantamweight. Only defense was against Simphiwe Nongqayi on Sep 24, 2011 at Mexicali, Meksika | Arce vacates to go down to bantamweight. Only defense was against Simphiwe Nongqayi on Sep 24, 2011 at Mexicali, Meksika |
|  Nonito Donaire def. Wilfredo Vázquez, Jr. | Şubat 4, 2012 | San Antonio, Texas | 3 |
|  Guillermo Rigondeaux current champion | Nisan 13, 2013 | New York, New York | 3 |