They do. Canelo alvarez fights at 154 and he comes in at fight night at 170lbs. Miguel cotto also fights at 154 and weights in at 168. Austin Trout also weighs in at 170+lbs. Alfredo "el perro" Angulo fights at 154 and weighs in at 175 fight night.Timothy bradley is a welterweight but he comes in over 160 lbs on fight night, and so does Victor ortiz. Mikey garcia was a 126 fighter and on fight night he rehydrates over 140 lbs. I don't know how they do it. It seems extremely unhealthy. But this is normal. Most 154 pounders arent really 154 pounders, they are usually dehydrated middleweights, SMW, or even as far as light heavyweights (perro angulo.....) So if you are a 154, 147 ,or any other weight, and you come in near the same weight at fight night, chances are, your opponent has a huge weight advantage over you, because its extremely normal for fighters now to rehydrate about 10-15 lbs, some as far as 20+, like Alfredo Angulo and JCC Jr, who is a Middleweight but comes in as a Cruiserweight.
Between the weigh in and his fight against Roy Jones Jnr (at middleweight) James Toney gained EIGHTEEN pounds. In 24 hours. They say that one of the reasons Roberto Duran quit in his 'no mas' fight with Ray Leonard is also because he binge ate after the weigh in (and Leonard himself suspected this in advance, and used it as part of his tactics).
they usually gain a few lbs after the weigh in
Do you mean days or weeks after the fight, or immediately after? How would that work? They eat or drink a lot between rounds?
In the Adonis Stevenson vs Chad Dawson fight I saw both men gained up to 10 lbs after the fight. But that's the heavier guys, does the same concept apply to the little guys? Like the middleweights and welterweights? The smaller fighters don't look like they gain as much after weigh ins.
