Esports Glossary
Esports & Tournament Glossary
50 terms covering formats, rankings, operations, and player management — defined by the team behind Tournament Suite.
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Best of 1 (BO1)A match format where a single game decides the winner.Best of 3 (BO3)A match format where the first team to win two games wins the series.Best of 5 (BO5)A match format where the first team to win three games wins the series.BracketA visual representation of a tournament's match schedule showing how competitors progress from round to round.Buy-InA registration fee paid by participants to enter a tournament.
C
CaptainThe designated representative of a team in communications with tournament officials.Check-InA confirmation step requiring participants to actively confirm their attendance within a specified window before a tournament begins.CircuitA series of tournaments linked by a shared points system that rewards consistent performance across multiple events.Closed QualifierA qualifier tournament restricted to invited teams, regional finalists, or teams that cleared open qualifiers.
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LadderA persistent ranked system where players or teams accumulate points over time through match results.LAN EventA tournament where all participants compete in person on a local area network, eliminating internet latency as a variable.LeaderboardA ranked list displaying competitors' standings, points, or ratings in a tournament or season.Live OpsThe ongoing management and operation of a live tournament or game service in real time.
M
Map PoolThe set of maps or stages that are eligible to be played in competitive matches for a given game or season.Match IDA unique identifier assigned to each match in a tournament system.Match ReportA formal record submitted by one or both teams documenting the outcome of a match.Match VetoThe process by which teams ban and pick maps or stages for a series.MMR (Matchmaking Rating)A hidden or visible numerical value used by matchmaking systems to estimate a player's skill level.
N
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OfficiatingThe process of administering and enforcing tournament rules during competition.Online TournamentA tournament conducted entirely over the internet where competitors play from separate locations.Open QualifierA preliminary tournament open to any team or player regardless of prior results or invitation status.OvertimeAdditional game time or rounds played when a match is tied at the end of regulation.
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RankA tiered designation — such as Bronze, Silver, Gold, or Diamond — that broadly represents a player's skill level within a game's competitive ladder.Ranked QueueA matchmaking mode within a game where players compete for rating points in official ladder standings.RegistrationThe process through which teams or players sign up to participate in a tournament.ReplayA recorded playback of a match that can be reviewed after the game concludes.RosterThe official list of players eligible to compete for a team in a tournament.Round RobinA group-stage format where every participant plays against every other participant once.
S
ScrimA practice match between two teams arranged outside of official competition.SeedingThe process of ranking competitors before a tournament to structure the bracket so that stronger teams do not meet in early rounds.Single EliminationA tournament format where a competitor is eliminated after a single loss.SubstitutionThe replacement of one rostered player with another during a tournament.Swiss SystemA tournament format where participants with similar win/loss records are paired each round.
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Put the theory into practice
Tournament Suite supports every format in this glossary — single elimination, Swiss, round-robin, and more. Build your first tournament in minutes.