page_title: Nikolai Valuev
section_title: Valuev vs. Chagaev
hierarchical_section_title: Nikolai Valuev / Professional career / First reign as WBA heavyweight champion / Valuev vs. Chagaev
caption_attribution_description: Deutsch: Ruslan Tschagajew im WM-Kampf gegen Nikolai Walujew.
context_page_description: Nikolai Sergeyevich Valuev is a Russian politician and former professional boxer. He competed in boxing from 1993 to 2009, and held the WBA heavyweight title twice between 2005 and 2009. Standing at a height of 2.13 metres and a peak weight of 149 kilograms, Valuev is best known for being the tallest and heaviest world champion in boxing history.
context_section_description: The title defence was held on 14 April 2007. Chagaev defeated Valuev by a majority decision (117–111, 115–113 and 114–114).
  Valuev changed trainers, from Manuel Gabrielian to Alexander Zimin, who coached the old Soviet Union amateur boxing team. On 29 September 2007, Valuev won against Jean-Francois Bergeron in Oldenburg, Germany, by a 12-round unanimous decision (118–111 on all three cards).
caption: Valuev vs. Chagaev, 2007
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