Russian former professional boxer Nikolai Valuev first won in 2005 the heavyweight champion title from this American former professional boxer of which ethnicity?
Nikolai Valuev Nikolái Sergéyevich Valúev (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.
Leotis Martin Leotis Martin (March 10, 1939 – November 20, 1995) was an American boxer, the first ever NABF heavyweight champion and best known for his victory over former heavyweight champion Sonny Liston. Martin was a good puncher and a fairly skilled heavyweight who fought from 1962 to 1969. He compiled a record of 31 wins (19 KOs) and 5 losses and in 2003 was named to the "The Ring"' s list of 100 greatest punchers of all time. His career, however, was marked by inconsistency and bad luck.