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|Founder||Jon W. Robinson|
|Founded at||London, UK|
|Purpose||Boxing sanctioning organization|
The World Boxing Union (WBU) is a boxing sanctioning body. The original WBU was founded in January 1995 by IBF European representative Jon W. Robinson. It sanctioned boxing with various promoters worldwide.
|Name||Duration of reign||Defenses||Notes|
|George Foreman (USA)||March 29, 1995 – 1997||2||Foreman was recognized as champion after he was stripped of the IBF title|
|Corrie Sanders (RSA)||November 15, 1997 – May 20, 2000||3||Defeated Ross Purity|
|Hasim Rahman (USA)||May 20, 2000 – April 21, 2001||0||Relinquished the title in order to fight Lennox Lewis for the IBF, IBO and WBC titles|
|Johnny Nelson (GBR)||November 24, 2001 – December 4, 2001||0||Defeated Alexander Vasiliev. Relinquished the title in order to concentrate on defending his WBO Cruiserweight title|
|Georgi Kandelaki (GEO)||December 21, 2002 – January 2004||0||Defeated Alexander Vasiliev. Kandelaki either relinquished or was stripped of the title|
|Matt Skelton (GBR)||February 25, 2005 – January 26, 2009||0||Skelton relinquished the title|
Other past WBU champions include Sirimongkol Singwancha, Sornpichai Kratingdaenggym, Pongsaklek Wonjongkam, Ricky Hatton, Eamonn Magee, Tony Oakey, Corrie Sanders, Enzo Maccarinelli, Lee McAllister, Angel Manfredy, George Scott, Hasim Rahman, Willie Limond, Michael Gomez, Kevin Lear, Anthony Farnell, Jimmy Lange, Derry Mathews, Choi Tseveenpurev, Jeremy Williams, Don Diego Poeder, Wayne Elcock, Roy Jones Jr, David Burke, Vinny Pazienza, and Micky Ward.
In addition, Carlos Contreras defeated challenger Victor Rabanales by 8 RTKO.
Lennox Claudius Lewis is a former professional boxer who competed from 1989 to 2003. He is a three-time world heavyweight champion, a two-time lineal champion, and remains the last heavyweight to hold the undisputed championship. Holding dual British and Canadian citizenship, Lewis represented Canada as an amateur at the 1988 Summer Olympics, winning a gold medal in the super-heavyweight division after defeating Riddick Bowe in the final.
Cornelius Johannes "Corrie" Sanders was a South African professional boxer who competed from 1989 to 2008. He won the WBO heavyweight title in 2003 after knocking out Wladimir Klitschko in two rounds, which was considered one of the biggest upsets in heavyweight boxing history; The Ring magazine named it the Upset of the Year. In 2004, having vacated the WBO title, Sanders faced Wladimir's brother Vitali Klitschko in an unsuccessful but valiant challenge for the vacant WBC and Ring heavyweight titles. He also held the WBU heavyweight title from 1997 until 2000. Sanders' other notable achievements include holding the South Africa national heavyweight title in 1991, defeating former cruiserweight champions Carlos de León and Bobby Czyz by first round and second-round knockout respectively, and losing in a close slugfest fight with future unified and two-time world heavyweight champion Hasim Rahman.
Hasim Sharif Rahman is an American retired professional boxer who competed from 1994 to 2014. He is a two-time world heavyweight champion, having held the unified WBC, IBF, IBO and lineal titles in 2001; and the WBC title again from 2005 to 2006. He was ranked as the world's top 10 heavyweight by BoxRec from 2000 to 2005, and reached his highest ranking of world No.6 at the conclusion of 2004.
The International Boxing Organization (IBO) is a non-profit organization that sanctions professional boxing matches and awards world and regional championships.
Wladimir Wladimirowitsch Klitschko is a Ukrainian former professional boxer who competed from 1996 to 2017. He held the world heavyweight championship twice, including the unified WBA (Super), IBF, WBO, IBO, and Ring magazine titles. A strategic and intelligent boxer, Klitschko is considered to be one of the best heavyweight champions of all time. He was known for his exceptional knockout power, using a strong jab, straight right hand and left hook, as well as great footwork and mobility, unusual for boxers of his size.
Super Cruiserweight is a weight class in combat sports.
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Marion Wilson is an American former heavyweight professional boxer who competed from 1989 to 2007. Wilson, despite having faced some of the hardest punchers of his era, has never been stopped in his professional career. As a result, he is considered by many to have one of the best chins in boxing history, and boxing writer James Slater included him on a list of boxing's best "chins" and Livefight.com ranked him as #8 in terms of best heavyweight chins ever. Wilson faced virtually all notable prospects of his time with perfect records, stopping several promising winning streaks as well as taking former heavyweight champion Ray Mercer to a draw. In the words of the ABC Sports Network's boxing analyst Al Bernstein, Wilson is a veteran fighter, who "has not won many fights, but always gives these youngsters a tough time." He holds wins over Corey Sanders, Mike Hunter, and Paea Wolfgramm.
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Chris Byrd vs. Wladimir Klitschko II, billed as "Revenge Is The Name Of The Game", was a professional boxing match contested on 22 April 2006 for the IBF and vacant IBO heavyweight championship.
Wladimir Klitschko vs. Ruslan Chagaev, billed as "Knockout Auf Schalke", was a professional boxing match contested on 20 June 2009 for the IBF, WBO, IBO, The Ring and lineal heavyweight championship.
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