petes against every other team or player exactly once. The number of games is determined by the formula N(N-1)/2, where N is the number of teams or players. A diagram of a single round-robin tournament visually represents these matchups, often using a table or grid to show each team's schedule. Here's how a single round-robin diagram can be constructed:List of Teams/Players: Start by listing all teams or players in the tournament. Matchups: Create a table or grid where each row represents a team/player and each column represents another team/player. Round Numbers: Add a row or column for round numbers. Match Schedule: Fill in the table with the scheduled matchups. For example, in the first round, team 1 might play against team 2, and so on. Byes (Optional): If the number of teams is odd, there will be byes, where one team doesn't play in that round.