The Jones' fight is now postponed due to JoeCal's sprained wrist per the USA Today newspaper. Plot a timeline of hand injuries to fights postponed by JoeCal over his career.
That could be. Calzaghe/Pavlik did not happen because of a testicle problem: Joe can't find his, so I would not rule out a brain-fart in this case.
What you do is create an x / y axis, then notice the historical pull-out of fights per hand injury claims x days before upcoming fights. Then put them in by month over the years on the continium. Not really a hard concept.
..or did I misread and it was hand, not head? :huh Anyway, it'll probably be December or January before they fight now..