Chucho, I'm sure of it. Like a lot of Beristain's fighters, he was quite hittable with a right hand if you timed it right. I think Castillo is more than capable of finding that tick/beat and dropping his cross-counter in-between Roman's jabs. Also, Castillo has a better jab imo and was way more relentless a pressure fighter (with a way better engine) than Kong. I think he wins quite comfortably. I find Rose to be better than Roman, and I thought Chucho beat him like 9-6 with a KD, albeit in a fight where you could feasibly have Rose winning 9-6 too. Castillo just seems to way worse for Roman than the other way round.