ROUND ROBIN A round-robin tournament (or all-play-all tournament) is a competition "in which eachcontestant meets all other contestants in turn".
Terminology• The term round-robin is derived from the term ruban, meaning "ribbon". Over a long period of time, the term was corrupted and idiomized to robin.• In a single round-robin schedule, each participant plays every other participant once. If each participant plays all others twice, this is frequently called a double round-robin. The term is rarely used when all participants play one another more than twice, and is never used when one participant plays others an unequal number of times.
Use• In sports with a large number of competitive matches per season, double round-robins are common. This system is used during qualification for major tournaments such as the FIFA World Cup and the respective continental tournaments. There are also round-robin chess, go, and Scrabble tournaments.
Evaluation• In theory a round robin tournament is the fairest way to determine a champion among a known and fixed number of participants. Each player or team has an equal chance against all other participants. A participants final record is thus seen to be more accurately represented in the results. This can also be used to determine which teams are the poorest performers.
• The primary disadvantage to a round robin tournament is the time needed to complete it. Unlike a knockout tournament where half of the participants are eliminated after each round, a round robin requires one round less than the number of participants.
Bible passage• 1 Corinthians 9:25 Everyone who competes in the games goes into strict training. They do it to get a crown that will not last; but we do it to get a crown that will last forever.