Here's how the heroes odds are (all who have said they will step-up in competition)

Junior Witter = -2000 = 1/20
Arturo Morua = +800 = 8/1

Ricky Hatton = -1000 = 1/10
Juan Urango = +600 = 6/1

Joe Calzaghe = -2000 = 1/20
Peter Manfredo Jr. = +1000 = 10/1

These are not my odds, these are from vegas.