Biggest Overlay on Derby Day?

[Gander]

Their price in relation to them winning their Derby...

Any guesses?

Big Brown (if he goes off at 4/1 or higher, which I doubt but so many seem to think is possible)

Bob Black Jack (at anything above 25/1, which is likely)

Pyro (if he goes off at 10/1 or higher, which after his performance on the junk is possible)