On June 4, 1923, Frank Hayes suffered a fatal heart attack in the middle of a steeplechase at Belmont Park, New York. By profession, Frank Hayes was a horse trainer and not a jockey, so he had never actually won a horse race before.
While riding the determined horse, Sweet Kiss, Frank Hayes passed away just before crossing the finish line of the race. This means that the only professional race he won happened after he was dead, and he is the only person to finish and win a race after dying!
The heart attack is thought to be a result of severe training to lose weight so he would meet the race regulations. Another contributing factor is that Hayes was a little bit too excited to be riding the winning horse. 'Sweet Kiss' soon had his name changed to 'Sweet Kiss of Death' until the end of his days.