If Mayweather wants to challenge Martinez for the middleweight championship he should fight him at 160. If he doesn't want to go up to 160, then stay at welter or fight someone else at 154. Beating him at 155 will only cheapen the achievement anyway. I won't criticise him for not taking the fight, he's a welter and Martinez is a middle. It's only when there's a ham sandwich between the two men and one is using weight as an excuse that I get fed up with them.
I understand the dangers of cutting weight, but it's also dangerous when one fighter comes in 20 pounds heavier, or multiple weight above their opponent. It's also completely unfair and makes a mockery of the concept of weight divisions.
Weight cutting will always happen whatever time the weigh-in is. Some fighters will always want to gain an advantage by cutting weight and fighting naturally smaller men in a lower division.
Well I know this sounds harsh, but If someone naturally walking around at 160 cuts down to 147 and risks being dehydrated or weight drained the risk is to themself and also makes the sport look bad. I think the idea of allowing a maximum amount of weight to gain after the weigh in sounds fairest.
They will always cut to 147 if they can. The difference is with a 24 hour weigh in they wont go in the ring dehydrated. I don't think any rule is simple or perfect.
I suppose you could allow them to drain themselves as much as they liked, provided they pass the pre-fight examination, and then just set them the maximum in-ring weights as we've suggested in this thread. But a welterweight shouldn't be getting in the ring at 160+, it's a farce. Welterweight is 141-147.
Its too late to go BACK to same day weigh ins, with fighters and champions set in their rankings in each division.
Fair play, we'll do it your way: Marlon Starling jumped straight to Middleweight to fight Michael Nunn Mickey Walker faced Light Heavyweight Champion Levinsky AND Middleweight champion Harry Greb Armstrong was robbed against Ceferino Garcia. He defended his Welterweight title weighing in just over the Lightweight limit. Barbados Joe Walcott beat (then) Heavyweight Joe Choynski. Luis Manuel Rodriguez, Kid Gavilan and Emile Griffith all fought top-rated Middleweights. Here are just some of a few examples of natural Welterweights taking on bigger challenges. If he isn't fighting Pac, who else is there at Welter/Junior Middle? I think Pac should do the same, fight Martinez if he ain't fighting Floyd. Or they should both retire.
Gerald McCllellan certainly wasn't helped by being given an extra day to cut a ridiculous amount of weight.