Competing for your sport's highest achievement shouldn't be a question, but for horse racing's Triple Crown, it's not that simple.

There will be no Triple Crown winner in horse racing this year. Sovereignty, the three-year-old thoroughbred who won the Kentucky Derby on Saturday, will not race in the Preakness Stakes – the second leg of the three races that make up the Triple Crown.

Just a few days after winning the Kentucky Derby, Sovereignty was ruled out of running in the Preakness Stakes.