Question: To whom did this WBA heavyweight champion, that Joe Hipp challenged the championship for in 1995 as the first Native American, lose via knockout?
Related documents: [0]  [DOC] Bruce Samuel Seldon (born January 30, 1967) is an American former professional boxer who competed from 1988 to 1996, and 2004 to 2009. He held the WBA heavyweight title from 1995 to 1996, most notably losing to Mike Tyson via knockout in his second defense. [END] 
[1]  [DOC] Joe "The Boss" Hipp (born December 7, 1962) is a retired professional Native American heavyweight boxer. A member of the Blackfeet Tribe, he became the first Native American to challenge for a world heavyweight boxing championship on August 19, 1995 when he fought WBA champion Bruce Seldon at the MGM Grand Garden Arena. In May 2009, he was inducted into the American Indian Athletic Hall of Fame. [END] 
Answer: 
Mike Tyson
Mike Tyson