He had that disputed draw with Charlo, then lost the rematch, but that was well over 2 years ago. Legal or promotional issues?
Robbed of his biggest win against the privileged, pampered, overrated, overpaid American. Then never to be seen again. Same old story in boxing.
He surely beat Charlo in the first fight and was robbed of his signature win. He was also Charlo's biggest win in his stoppage loss in the rematch. I haven't heard anything. Some fighters have a horrible time getting over their first loss. Ricky Hatton being one of those.
People forget that America isnt everywhere. The money Costano made in those two fights probably set him up for life..much like Maidana against Floyd. He is probably done as the money he's earned nullifies motivation to train hard and fight...just speculating..