The KO that break definitely I am not speaking of mere defeats before the deadline that we had a lot of champions who returned to the top eventually but that leaves a terrible boxer ko inanimate long minutes in the ring and after the boxer that never returns, or n is never be the same!
Of the examples come to mind:
CHANET / MKERTCHIAN
HATTON / PACQUIAO
WILLIAMS / MARTINEZ
JONES / ART 1
CASTILLEJO / SYLVESTER
GAMACHE / GATTI

David Thio died


Wednesday, March 15, 1989
David Thio died
The young boxer David Thio Ivory Coast (22) died yesterday afternoon in Lyon as a result of his fight with American Terrence Alli on March 4, without regaining consciousness.
Thio and married a girl of four months, was in a coma for ten days after suffering a spectacular KO during the ninth round of an informal semi-final World.
Discovered in 1984 in Ivory Coast, David Thio was turned professional in 1986 after only five amateur fights all victorious and was undefeated after 18 professional fights.
The young Ivorian is the first professional to find death in 1989. Upon KO dramatic and hospitalization, a fierce controversy was opened in France.
Crossed the French and European plan for its Ivorian, David Thio, who aspired to the light world title, had to resolve to confront the American boxer, the charts provided much more than his previous opponents. But the controversy is not about the merits of the fighting, but in the course of the eighth recovery during which Thio, who is on a par so far, dropped sharply from foot and cashed several rounds to the face . This is a serious professional misconduct. His manager then had to say "Stop, I stop." David was no longer able to respond appropriately, said Rene Jacquot, champion of the world super-welterweight, who had already had the opportunity to work with Thio training.