Less South America Pressure In 2018?
The SF article on SA is interesting. Things look good there, but maybe not quite so good as last year, especially with regard to their second crop corn.
This is worth a read if you haven't already.
Of course it's a long way from harvest and many things can happen, but one doesn't usually expect much improvement over the course of the growing season. (Our August, September and October weather was an exception.)