During the 19th and the early 20th century, the popularity of boxing brings about the establishment of weight divisions which features other classes beside the heavyweight class to eliminate the handicap of smaller contestants’ having to compete with excessive weight opponents. Some of these weight divisions came from the United States while many others come from Great Britain.
There were initially eight weight divisions in men’s boxing before more divisions were included, and professional governing bodies now acknowledge a total of 17 weight classes, which had their current names after the major boxing organizations in 2015. The upper limits of these classes are determined as follows:
minimumweight, light flyweight, flyweight, super flyweight, bantamweight, super bantamweight, featherweight, super featherweight, lightweight, super lightweight, welterweight, super welterweight, middleweight, super middleweight, light heavyweight, cruiserweight, heavyweight, and unlimited
In all world and national title fights, weight limits must be strictly managed, although boxers are often allowed by contract to scale the day before a fight. If a boxer is over the limit of the class he intended to fight, he is normally given time to make the stipulated weight. If he fails, the bout is proceeded, but if the overweight fighter wins the bout, the position in the fight he intends to join is declared vacant.
In Olympic amateur boxing event, the weight divisions for men are as follow:
light flyweight ( weight not more than 108 pounds (49 kg), flyweight, bantamweight, lightweight, light welterweight, welterweight, middleweight, light heavyweight, heavyweight, super heavyweight, and any weight over 201 pounds (91 kg)
There is no strict agreement on weight divisions of women’s professional boxing, but amateur weight divisions are agreed as follow:
flyweight (weight not more than 106 pounds), bantamweight, featherweight, lightweight, light welterweight, welterweight, middleweight, light heavyweight, heavyweight, super heavyweight, any weight over 179 pounds (81 kg)
Women’s Olympic boxing is divided into three weight classes as follow
flyweight, lightweight, and middleweight