Before Polytrack - Were KY Derby's This Wide Open?

[2MinsToPost]

Curious as to what the past Derby's have been like, in other words it appears that their is just wide open speculation on who might win. It seems Big Brown is the only possible stand out, and that is questionable at best based on all the talk going on now.

So is this because of the Derby preps run over polytrack? Which begs the question that came to me earlier today - if this is the case why not implement a mandatory dirt race from January to April? Would that help?