The U.S. Amateur Championship is a prestigious golf tournament in the United States, organized by the United States Golf Association (USGA). Established in 1895, it is one of the oldest amateur golf championships in the world. The tournament is open to amateur golfers who meet specific eligibility criteria, and it typically takes place annually in late summer. The championship format includes both stroke play and match play rounds. The top 64 players from the stroke play rounds advance to the match play portion, culminating in a final match to determine the champion. The winner receives an invitation to compete in several professional tournaments, including the Masters Tournament.