Question: Nikolai Valuev is a two time WBA heavyweight champion, having first won the title from what boxer who competed from 1992 to 2010, and was the first Latino boxer to win a heavyweight title?
Sentence (from "Nikolai Valuev"): The following year, Valuev regained the now-vacant title in a rematch against Ruiz, losing to David Haye in 2009 in his final fight.
Relevant evidence: No