A derby is a type of sporting event, often associated with horse racing, where competitors race against each other for a prize. The most famous example is the Kentucky Derby, held annually in the United States. This event attracts thousands of spectators and is known for its rich traditions, including wearing stylish hats and sipping mint juleps. In addition to horse racing, the term "derby" can also refer to other competitions, such as roller derby, a fast-paced sport played on roller skates. In roller derby, teams compete to score points by lapping opponents, showcasing athleticism and strategy in a fun, energetic atmosphere.