In a sport like boxing, its fairly rare for a star to go out in a big-time, memorable fight. And most of the fights on this list are memorable for the way a once-great champion went down in flames.\r<br>\r<br>\r<br>\r<br>\r<br>Lennox Lewis TKO 6 over Vitali Klitschko: June 21, 2003\r<br>Tony Zale Loses by Round 11 TKO to Marcel Cerdan: September 21, 1948\r<br>Oscar De La Hoya Loses by Round 8 TKO to Manny Pacquiao: December 8, 2006\r<br>Joe Walcott Loses by Round 1 KO to Rocky Marciano: May 15, 1953\r<br> Joe Louis Loses by Round 8 TKO to Rocky Marciano: October 26, 1951\r<br>Marvin Hagler Loses by Split Decision to Ray Leonard: April 6, 1987\r<br>7 of 11\r<br> Michael Spinks Loses by Round 1 KO to Mike Tyson: June 27, 1988\r<br>Rocky Marciano KO 9 over Archie Moore: September 21, 1955\r<br> James Jeffries Loses by Round 15 KO to Jack Johnson: July 4, 1910\r<br> Jack Dempsey Loses by Unanimous Decision to Gene Tunney: September 22, 1927
