No Marquez-Diaz on Sept 16?

It's just a tune up for Marquez to keep him busy while Pacquiao rests from his last fight and becomes available this November. So I don't think they will be looking for a more dangerous opponent for him than David Diaz. But if Diaz would not be available, there is that up and coming Filipino welterweight fighter named Mark Jason Melligen who could somewhat simulate Pacquiao. Melligen by the way has been winning his fights in the USA, some even via the short route.