The US Open Polo Championship is an annual polo tournament held in the United States. The tournament is organized by the United States Polo Association (USPA), the national governing body for the sport of polo in the United States. The US Open Polo Championship is considered one of the most prestigious and high-level polo tournaments in the world, and it attracts top talent from around the globe. The tournament is typically held in the spring and features teams from around the country competing for the championship title. The US Open Polo Championship is known for its high-level competition and exciting matches, and it is an important event on the international polo calendar.