Mayweather has held the green and gold in all four of his weight classes, he's the WBC's poster boy. I think's it's only correct and common sense on the part of the WBC that they let Oscar defend against Mayweather, I think there's no current mandatory installed at 154 by the WBC so it's a voluntary defence. WBC seem to have got this one right, it's a shame such common sense isn't involved in every title fight. They shouldn't have all these friggin belts, if every fan did something about it I.E a boycott then they'd have no choice but to change it. Radical I know but it would work for sure, it's our money.