Duk-Koo Kim – after his brutal death both the referee who officiated the match and Kim's mother committed suicide
The young Korean fighter    wasn't the first boxer to die as a result of injuries suffered in the    ring. Nor was he the last. But up to this day, those who watched Kim    battle Ray "Boom Boom" Mancini for 14 rounds in the outdoor arena at    Caesars Palace, remember vividly a day that would cause a national    debate over the very existence of boxing and ultimately bring change to    the sport.
Mancini was defending his WBA    lightweight title for the second time when he climbed through the ropes    at Caesars. In the 13th round, Mancini unleashed a barrage of 39    straight punches. Somehow, Kim survived the round. Early in the 14th,    Mancini connected with two big rights to Kim's head and the Korean    dropped to the canvas. He beat the count of 10, but referee Richard    Green stopped the fight. Kim was carried out of the ring by stretcher    and rushed to Desert Springs Hospital. He died four days later.
This    fight became famous for the aftermath: Kim's mom and the referee    Richard Green committed suicide months after Kim's death. It's also said    that this fight changed boxing rules and posterior fights went from  15   rounds to just 12. Mancini suffered from depression and was never  the   same fighter again, though he continued to box until 1993.
Becky Zerlentes – the first woman to die in the ring
College teacher and    award-winning female boxer Becky Zerlentes died in 2005 and is believed    to be the first woman to die in a sanctioned bout. The preliminary   cause  of death was "blunt force trauma to the head", but results from   an  autopsy were not immediately available. Zerlentes, 34, was struck by    opponent Heather Schmitz and, despite wearing protective headgear,   fell  unconscious during the amateur bout in Denver. Physicians at the   Golden  Gloves competition jumped into the ring, but Zerlentes never   regained  consciousness and died several hours later. Zerlentes had won a   regional  Golden Gloves title in 2002 before taking a break from   boxing. She had  told her coach before this fight, that this was going   to be her last one  since she was going to stop boxing because of her   age.
Evander Holyfield – had his ear bite off by Mike Tyson
Few would argue that at the    peak of his powers Mike Tyson was unrivalled in the heavyweight    division and probably only Mohammad Ali has been as big a boxing box    office draw. By the time he fought Evander Holyfield in June 1997,    however, Tyson's career was on the slide. Clearly a desperate and    out-of-control individual, Tyson, in front of a sold out crowd at the    MGM Grand Garden Arena in Las Vegas, took a bite out of his opponent's    ear in the third round. The referee, Mills Lane, could hardly believe  it   until he was summoned over to Holyfield's corner to inspect the   damage.  His initial thoughts were to abandon the fight there and then,   but  instead he ordered the judges to deduct two points from Tyson's   score  and resumed hostilities. Within seconds, Tyson repeated the same    skullduggery and was promptly disqualified. “It's like Dracula time,”    said the commentator. “I've never seen anything like this in boxing.”    All hell broke loose, the police came into a by-now crowded ring to  try   and restore order and like a ripple effect the bedlam moved to the   hotel  lobby and then the streets outside. Tyson was suspended from   boxing and  his purse was withheld. It was the beginning of the end for   Iron Mike.
Frankie Campbell – had his brain knocked off from his skull
Frankie Campbell whose real name was Francisco Camilli was born in 1904. His professional record included 40 fights, 33 wins (26 Kos), 4 loses, 2 draws and 1 no contest. His final fight was held in San Francisco, California, on August 25th, 1930. He lost his life against the infamous Max Baer, portrayed as a vicious killer in the movie Cinderella Man.
They    said that Campbell knocked down Baer in the 2nd round, and this,    enraged Baer bringing Campbell to an end. While other people talk about    Baer losing the 3rd and 4th round in a row, and in the 5th round he    couldn't take it anymore and became enrage because Tillie "Kid" Herman    -former friend and trainer of Baer who switched corners overnight - was    taunting and jeering Baer. Campbell's brain was knocked off loose  from   his skull and was pronounced dead the next day. Baer was charged  with   manslaughter but later was acquitted of all charges. He would  give   entire earnings to Campbell's family from succeeding bouts.
Jess Willard – the heavyweight champion who was bitten off by a contestant 60 pounds smaller
It is 1919 and the    heavyweight champion of the world is a giant named Jess Willard. The 6'6    ½", 245 pound Willard had taken the title from an over-the-hill Jack    Johnson. His newest challenger is a savage fighter out of the west by    the name of Jack Dempsey, who at 6'1" and 187 pounds seems to belong  to a   weight class several places below Jess. Prior to the start of the    fight, promoter Tex Rickard visits Dempsey and his manager in his    dressing room. Kearns had to all but beg Tex to set up a fight between    his man and the giant Willard, a battle that seems a mismatch on size    alone. He urges Jack to stay down if Willard knocks him down; he  doesn't   want to be associated with a murder in front of thousands of   witnesses.
Dempsey  growls there's nothing to   worry about. Willard is bigger but he's not  in the shape of the   challenger. The Manassa Mauler' Jack Dempsey  brutally beat down and   dethroned reigning 6'6 champion Jess Willard in  three violent rounds at   the Bay View Park Arena in Toledo, Ohio. Dempsey  fractured the   champion's jaw in the first round and knocked him down  seven times in   the opening stanza alone. After two more rounds of  savagery Willard's   corner threw in the towel to rescue their bloody and  bruised fighter.   Jess Willard survives by the margin of minutes, perhaps  only seconds,   one of the worst beatings in the history of prize  fighting.
Dempsey   would go on to reign as  heavyweight champion for seven straight years   until he was decisioned in  1926 by Gene Tunney.
Richard Grant – had his jaw broken when his defeated opponent hit him with no gloves on
Butler was a very promising    young fighter from New York City known by the nickname “Harlem   Hammer”.   In November 2001, James Butler fought Richard “The Alien”   Grant.  The  bout was a charity event to benefit survivors of the   September 11  attacks.  After losing by unanimous decision Butler made   his way to the  middle of the ring to purportedly congratulate Grant.    Grant reacted by  stretching his hand out in a motion to embrace.    Instead, Butler (who  had already removed his gloves) threw a vicious   haymaker to Grant's  face.  Richard Grant suffered numerous facial   injuries including a  broken jaw, lacerated tongue, and several   stitches.  Butler, in turn,  was arrested and convicted of assault and   served prison time for the  attack.
Unfortunately   the tale does not end  there.  James Butler continued his career after   this incident but could  never duplicate his earlier success.  In   October of 2004, Butler was  arrested and charged with murdering Sam   Kellerman, brother of HBO Boxing  analyst Max Kellerman. He (ironically)   used a hammer and set his body  on fire after a dispute.  Butler pled   guilty in 2006 and was sentenced  to 29 years in prison.
Benny Paret – went into coma and died 10 days after a controversial fight against Fullmer
Benny "Kid" Paret was a    Cuban boxer who won the welterweight title for the first time in 1960,    but lost it seven months later when Emile Griffith knocked him out. His    last fight against Griffith occurred on March 24, 1962. In the  twelfth   round of the fight, Griffith hit Paret twenty-nine times in a  row, and   eighteen times in six seconds, when Paret was lying against  the ropes   before referee Ruby Goldstein stopped the fight. Paret went  into a coma   after the fight, and died ten days later.
The    last fight was the subject of controversies. It is theorized that one   of  the reasons Paret died was that he was vulnerable due to the   beatings  he took in his previous three fights. New York State boxing   authorities  were criticized for giving Paret clearance to fight just   several months  after he was knocked out by Gene Fullmer in his second   to last bout. The  actions of Paret at the weigh in before his final   fight have come under  scrutiny. It is alleged that Paret taunted   Griffith by calling him  Maricón (Spanish slang for "faggot"). Griffith   wanted to fight Paret on  the spot but was restrained. The referee Ruby   Goldstein, a respected  veteran, came under criticism for not stopping   the fight sooner.  Goldstein would never be the referee for a fight   again as a result of  the controversy from this fight.
The   fight was  the centerpiece of a 2005 documentary entitled Ring of  Fire:  The Emile  Griffith Story. At the end of the documentary Griffith  who  has harbored  guilt over the incident over the years is introduced  to  Paret's son. The  son embraced Griffith and told him he was  forgiven.
Billy Collins Jr. – lost his vision after his opponent cheated removing padding from his gloves
The 1983 fight between Luis    Resto and Billy Collins Jr. is known by many as one of the dark spots    on the boxing industry, as Panama Lewis, the manager for Resto  cheated   to give Resto an advantage on the younger and odds on favorite  Collins.   Essentially, he removed some of the padding on Resto's  gloves which   resulted in not only Resto having harder punches, but  also Collins Iris   was completely torn leaving him to have permanent  blurred vision. After   the injury ended Collins career, he would commit  suicide two years   later, while Resto and Lewis both served jail time  for the illegal   gloves being considered a deadly weapon.
Jonathan Thaxton – had his first and most memorable knockout
This fight was perhaps the    biggest fight of both Emanuel Augustus and Jonathan Thaxton's career.  In   1998 Thaxton made Augustus look like a million dollars via allowing   him  to use his chin as a punching bag. Further, this was the first   knockout  loss of Thaxton's career.