I’m not at the end of the thread here, but he cut his hoof out of the gate:
https://twitter.com/JohnCKilgore/status/475483196076085248
and
http://www.utsandiego.com/news/2014/jun/07/belmont-stakes-california-chrome-inury/
That colt has miles of heart. I was rooting for him.
If true, then it really wouldn't have mattered, if all the horses ran the other two races or not.