My take - not an original one but I'll give it anyway - is that Castillo is, sadly, a cheat.

He knows he struggles to make the weight, but he takes the fight and DELIBERATELY weighs in too heavy. He did the same first fight, he was given time to lose some weight and scaled back HEAVIER.

He simply thought Arum and Diego would have no option but to let him fight with a huge weight advantage again. He knew at least a week, probably two weeks, before that the weight would never be made. But left it until the weigh in to reveal this.

The man needs to lose. I will support anybody who takes him on now. Allied to the foot under the scales fiasco, his team can not be described as anything but cheats.