I have seen plenty of horses coming home looking like drunken
sailors and not breathing like that. did you watch the interview
while the horse had to sit there? He needed to move. but most
of the animals I have seen up close, are not what we would call
superior runners. And I have seen interview done live on the horses
with the jock where the horses looked like they could do it all again.

Big brown did not look like he was ready for another ala Ernie Banks.