Once again, there will be no Triple Crown winner in the trio of the most prestigious horse races in the U.S.

A chestnut colt named I'll Have Another had surprisingly won the Kentucky Derby and the Preakness Stakes last month and was the favorite to win Saturday's third leg in the Triple Crown series, the Belmont Stakes in New York.

But trainer Doug O'Neill scratched the horse from the Belmont on Friday when a veterinarian found swelling in the horse's left front leg, a sign of tendinitis, after his early-morning workout at the track.

O'Neill said he did not want to take any chances with the horse's health. He said the end of the horse's chance at winning the Triple Crown was “not tragic, but it's a huge disappointment.”

No horse has won all three of the Triple Crown races since Affirmed in 1978. I'll Have Another becomes the 12th in the 34 years since then to win the first two races, but not the Belmont.