Breeders Cup
In short
The Breeders' Cup is an annual series of top-level Grade I Thoroughbred horse races held in the United States. It serves as the championship event for international horse racing.
In plain words
It is a massive festival of horse racing where the best horses in the world compete for huge prizes. The event usually lasts for two days and brings together owners and trainers from many different countries.
A simple example
A champion sprinter might compete in the Breeders' Cup Sprint to prove they are the fastest horse of the year.
Why it matters
Winning a Breeders' Cup race significantly increases a horse's value for breeding. It is considered one of the most important milestones in a racing career.
Easy to mix up
Do not confuse it with the Kentucky Derby, which is a single famous race rather than a multi-race championship series.