Golden Tempo has won the Kentucky Derby at odds of 23-1 to make Cherie DeVaux the first woman to train the winner of the opening leg of the Triple Crown
An expert horse trainer told ABC News it was "nobody's fault."
The champion horse is coughing and his blood profile is not normal.
The horse with 65-1 odds won the 145th Kentucky Derby.
Country House's jockey objected to Maximum Security's win.
He never gave up the lead.