He may well have had respiratory bleeding; it happens all the time, especially in that heat. I believe he was the only horse in the field that ran in all 3 races, and he also lost a bit of training with his hoof issues. Im sure his hoof wasnt the problem; I know his blacksmith, and he fixes these things all the time. Id be more concerned about not being able to be trained the way he probably should have been, the fact that he was running 3 hard races in the span of 5 weeks, and the very real fact that he was running 1 1/2 miles and he may just not have the air to do that. Not many horses can; his sire was a sprinter and mostly produces sprinters. Thats why the Triple Crown is so difficult. We may well see one again, I was sure hoping he would be the one.