In boxing and in wrestling, only the upper weight limit is given in Wikipedia and other sources that I have found. This would mean that a flyweight fighter can compete in the heavyweight division and not vice versa. Is it actually legal that a flyweight fighter be allowed to fight in heavyweight division in boxing or wrestling?


2 Answers 2


According to the Canadian Amateur Wrestling Association, which I think follows the same rules as the Olympics:

A wrestler can choose to compete in the next higher weight class, except for the heaviest weight class, where the wrestler must weigh the minimum weight listed in this rulebook. The decision to change a weight class cannot be made after the wrestler has already weighed in and the athlete has officially been entered on the weigh-in sheet for a particular weight class.

Source (pdf)


Not true. A fighter can legally only fight someone in the same weight class. So every division has a minimum even if it is not stated. A fly weight cannot fight a middle weight on normal circumstances. Middle weight fight middle weights, heavy weights fight only heavy weights. This also implies size matters in a sports fight setting. The stronger one will win of the skill sets are really close enough.

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    This would be improved by a reference, otherwise it is just hear-say. Jan 2, 2018 at 21:39
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    I am afraid you misunderstood my comments. I do not care whatsoever whether your statement is correct or not. I care about the quality of this site. Answers that are just hear say make this site worst. If it is trivially easy to add a reference, then please do so. I strongly suggest you looked up the help center to see how this site works. Jan 3, 2018 at 14:27
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    The definition of a weight class does not include a minimum weight for all organizations. For example, Roy Jones Jr. won the heavyweight title (200+lb) while weighing in at 193 lb.
    – mattm
    Jan 3, 2018 at 15:50
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    Roy Jones Jr. moved up in weight classes, but HE WEIGHED IN AT 193 POUNDS. At that weight, boxers are not normally in the heavyweight class. The cruiserweight/junior-heavyweight max weight is 200 pounds.
    – mattm
    Jan 3, 2018 at 16:16
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    Roy Jones Jr. fought Ruiz, weighing in at 193 pounds for a heavyweight fight in 2003, which is after the establishment of the 1980 establishment of the cruiserweight class (200 lb).
    – mattm
    Jan 3, 2018 at 16:42

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