Boxing Giant Nikolai Valuev

Nikolai Sergeyevich Valuev (Russian: Никола́й Серге́евич Валу́ев; born 21 August 1973) is a Russian former professional boxer who competed from 1993 to 2009. He is a two-time WBA heavyweight champion, having first won the title from John Ruiz in 2005 and losing it to Ruslan Chagaev in 2007. The following year, Valuev regained the now-vacant title in a rematch against Ruiz, losing to David Haye in 2009 in his final fight.
Standing at 2.13 metres (7.0 ft) and a peak weight of 149 kilograms (328 lb), Valuev is best known for being the tallest and heaviest heavyweight champion in boxing history.