I don't box or participate in the combative sports so I might be asking a stupid question but please humor me. What is the minimum weight required to box/fight at a specific weight class. I can see all the boxing weight classes on wikipedia here so I know what the UPPER limit is for each class.
For example, if someone boxes at a high level at lightweight (135lbs) and wants to fight someone at heavyweight (200+ lbs) to win the heavyweight championship belt (something worth risking the size mismatch), will any sanctioning body allow this fight to occur even though there's a huge size mismatch between the two fighters?
I always hear fighters after a fight saying they are confident in their skill, they knew they could do XYZ, etc. thus, I could see someone thinking:
"Due to my lighter/smaller frame, I feel I can out-quick someone who fights at heavyweight. My quickness can help me duck/parry/slip his punches and run around him if he tries to corner me. Since I'm lighter, I should be able to box longer without getting tired, etc."
Assuming the lightweight is that skilled, would any boxing sanctioning body allow this fight to take place?