A weight class is a measurement weight range for boxers.
 The lower limit of a weight class is equal to the upper weight limit of the class below it.
 The top class, with no upper limit, is called heavyweight in professional boxing and super heavyweight in amateur boxing.
 A boxing match is usually scheduled for a fixed weight class, and each boxer's weight must not exceed the upper limit.
 Although professional boxers may fight above their weight class, an amateur boxer's weight must not fall below the lower limit.
 A nonstandard weight limit is called a catch weight.
Mike Tyson vs. James Smith, billed as "Super Fight", was a professional boxing match contested on March 7, 1987 for the WBA and WBC Heavyweight championships.
Michael Norgrove (9 January 1981 – 6 April 2013) was a British professional boxer from Woodford Green, London.
 Nicknamed the "Zambezi Hitman", at the time of his death Norgrove had an unbeaten professional record.
 His death occurred several days after he was taken ill during a boxing match in London, and marked the United Kingdom's first post-match boxing fatality of the 21st century.
 Norgrove's death reopened the debate as to the safety of boxing as a sport.
Drama in Bahama was a ten-round boxing match that took place between Muhammad Ali and Trevor Berbick in Nassau, Bahamas on December 11, 1981.
 Ali was 39 years old at this time, and Berbick was 27 years old.
 The fight went the distance with Berbick winning through a unanimous decision on points.
 This was Ali's last boxing match.
Boxing is a multiplayer sports video game produced by Mattel Electronics and released for its Intellivision video game system in 1981.
 The game simulates a 15-round boxing match with the goal of knocking out the opponent; at the time of the game's release a real-life professional boxing match may have lasted up to 15 rounds.
Angelito "Lito" Sisnorio Jr. (October 10, 1982 - April 1, 2007) was a Filipino World Boxing Council youth flyweight champion boxer who died following a controversial boxing match in Thailand in April 2007.
 The controversy over the match arose from the fact that Sisnorio's role in the fight was not officially sanctioned by the Philippine Games and Amusement Board.
 He reportedly sustained brain injuries during the fight on March 31, 2007, which he lost by knockout to Thai boxer Chatchai Sasakul.
 Following unsuccessful brain surgery, he was pronounced dead at Piyamin Hospital in Thailand at 9:15 PM, April 1, 2007.
Cassius Clay (soon Muhammad Ali) fought an eight-round boxing match with Texan Donnie Fleeman in Miami on February 21, 1961.
 Prior to this fight, Fleeman had a record of 51 fights with 45 wins including 20 knockouts.
 Clay won the bout through a technical knockout after the referee stopped the fight in the seventh round.
 This was the first time Clay had gone over six rounds in a boxing match.
 It was also the first time Fleeman had ever been knocked down in a boxing match.
 Fleeman retired from boxing after this fight.
Muhammad Ali and Zora Folley fought each other in a boxing match at Madison Square Garden in New York City on March 22, 1967.
Ali won the bout by knocking out Folley in the seventh round.This would be Ali's last boxing match before his suspension from boxing.
James "Bonecrusher" Smith (born April 3, 1953) is an American former professional boxer who competed from 1981 to 1999, and held the WBA heavyweight title from 1986 to 1987.
 He was the first heavyweight champion with a college degree.
Cassius Clay (soon Muhammad Ali) fought Sonny Banks in a ten-round boxing match at Madison Square Garden in New York City on February 10, 1962.
 Clay won the fight through a technical knockout when the referee stopped the fight in the fourth round.
 The event is remembered for being the first professional boxing match in which Ali was officially knocked down in the ring by his boxing opponent.

Question: Who did the boxer who competed  from 1981-1999 go up  in the boxing match against on March 7,1987.
Answer: Mike Tyson