According to early reports the field could be somewhat underwhelming, but possibly evenly matched.
Classic Empire, Japan's Epicharis head probables for third-leg of Triple Crown. Paulick Report
Based on this report those considering are as follows:
Lookin at Lee
Conquest Mo Money
J Boys Echo
Update: Add Irish War Cry to the list
So it's the back half of the Kentucky Derby field with some new shooters and a few horses that have had rotten luck.
Of all the contenders Tapwrit is interesting to me although I'm guessing that Classic Empire, if he runs, will be the morning line and betting favorite. I also am interested in Gormley and J Boys Echo in here, with some possible bet-sprinkling on Meantime.
Despite the lack of marquee names, it could actually be an interesting race. It's just too bad that few outside of hard-core racing fans will pay much attention to it since the Triple Crown hopes went South at the Preakness.