I think Canelo (20-25 pounds) and Pavlik (20-25 pounds) are the obvious ones but I have a feeling Ward could be surprisingly heavy on fight night, maybe as high as 190. He looks big and his team is always hideing his weight at fight night. It´s not revealed for a reason.
Why? Geale fights at 160lbs. Another 3lbs won't kill him. If he is struggling with the weight, move up.
One of the bigger ones I can remember was Clottey when he faced Chico. That was at least 20 lbs...Supposedly.
Gerald McClellan was known to come in the ring as a full blown cruiser in his later Middleweight fights. And that was when we still had same day weighins. With some help from durectics :yep
Speaking of duretics... does anyone know what G. Jones' ringweight was against Lebedev? That might actually be an extreme example.