The horse's trainer noticed a swollen left front leg Thursday and again Friday morning after 'I'll Have Another' took a light jog. A doctor confirmed that the horse has a swollen tendon which he says is the beginning of tendinitis. The horse would need six months of treatment before it could race again. Instead of that "I'll Have Another's Owners have decided to retire the horse from racing.
"It's a huge disappointment," said the horse's trainer Doug O'Neill.
There hasn't been a Triple Crown winner since Affirmed in 1978.