BoxRec

So which fighter had the most titles on the line for one fight ? Best example I can find is Roy Jones defending his WBC, WBA SUPER, IBF, IBO, WBF, IBA and most probably the ring belt, this could work for regional titles too

Pretty sure at the time they said that list of titles for Jones was a record, I doubt it has been broken since.

I know Hopkins was the first (maybe only) to defend IBF, WBA, WBC and WBO.

Natascha Ragozina was once in a fight where six belts were involved.

This was of course mainly a joke as there were almost no female super middleweights around.