"Morally" speaking Hatton should rematch Collazo.

But he won't.

There will always be a question mark but hey lots of great fighters live with question marks. Just because some of us note the questions doesn't mean that they define the results.

PBF-Castillo for example.

Hatton's best business/career decision is to avoid Collazo rematch and move on. Probably down to 140. If he stays on to fight at 147 without a Collazo rematch then I lose a lot of respect for him.

Personally, I think a rematch is necessary in order to avoid damaging the fabric of the space/time continuum. It would introduce an anomoly which would endanger us all, were this question not properly answered.

But since when was a boxer concerned about doing the right thing for the sake of the inhabited universe?