Badminton Rules:

Badminton doubles follow specific rules set by the Badminton World Federation (BWF). Here’s a summary of the main rules:

Court and Equipment

  • Court Dimensions: The court is 13.4 meters long and 1 meters wide.
  • Net Height: The net is 55 meters high at the edges and 1.524 meters high in the center.
  • Shuttlecock: Can be made of feather or synthetic materials.
  • Racket: Must meet BWF specifications.

Scoring System

  • Round Robin Round, Elimination Round and Semi-Final Round are single game matches, which is 21 points and max is 30 points.

The below rules are applicable to Best of three matches (Final Round)

  • Points: Matches are played best of three games, each to 21 A point is scored on every serve, regardless of who served (rally scoring).
  • Winning a Game: The first team to reach 21 points wins the If the score reaches 20-20, a team must win by two clear points. If the score reaches 29-29, the next point wins the game.
  • Winning a Match: The first team to win two games wins the match.

Serving

  • Service Courts: Each side has a left and right service The serve must be diagonal, from one service court to the opposite one.
  • Service Order: Players must serve in a specific order:
    1. The player from the right service court serves diagonally.
    2. When the serving side wins a rally, the same server serves again from the alternate service court.
    3. When the receiving side wins a rally, the serve passes to them.
  • Service Rotation:
    • The initial serve is from the right service court.
    • When the score is even, the server serves from the right service When the score is odd, from the left service court.
  • Serving Faults: Includes hitting the net, shuttle landing out, or incorrect positioning during the serve.

During Play

  • Rally: A rally is won when the shuttlecock hits the opponent’s court within the boundary or the opponent commits a fault.
  • Faults: Include hitting the shuttlecock out of bounds, not passing over the net, touching the net, or a player being hit by the shuttlecock.
  • Let: A rally is replayed without changing the score if a let is called (e.g., interference, shuttlecock breaking).

General Rules

  • Boundaries: In doubles, the back boundary line and the side lines are used for in-bounds.
  • Switching Sides: Players switch sides of the court after each In the third game, they switch sides when the leading score reaches 11 points.

In a round-robin tournament, where multiple teams play against each other and end up with the same number of points, various tiebreaker criteria can be used to determine the rankings. Here are the common methods used:

1.   Head-to-Head Record

  • Direct Match Result: The result of the match between the tied The team that won the head-to-head match will rank higher.
  • Multiple Teams: If more than two teams are tied, the head-to-head results among those teams are considered.

2.   Game Difference

  • Game Difference: The difference between the total games won and lost in all The team with the higher game difference ranks higher.

3.   Point Difference

  • Point Difference: The difference between the total points scored and points conceded in all matches. The team with the higher point difference ranks higher.

4.   Total Points Scored

  • Points Scored: The total points scored by the team in all The team with the higher total points scored ranks higher.

5.   Additional Matches

  • Playoff Match: In some cases, an additional match may be played between the tied teams to determine the ranking.

Example of Tiebreaker Process:

  1. Head-to-Head Record: If Team A and Team B are tied, check the result of their match against each other. If Team A won, they rank higher.
  2. Game Difference: If the head-to-head result doesn’t break the tie (e.g., multiple teams), compare the game differences. Calculate the total games won minus total games lost.
  3. Point Difference: If the game difference is also tied, compare the point Calculate the total points scored minus total points conceded.
  4. Total Points Scored: If point difference is still tied, the team with the most points scored in all matches ranks higher.

Applying BWF Regulations:

The BWF (Badminton World Federation) typically uses a combination of these criteria. Here’s the order of tiebreakers according to BWF guidelines:

  1. Matches Won: Number of matches won in the group.
  2. Match Result Between Tied Players/Teams: If two players/teams are tied, the winner of the match between them is ranked higher.
  3. Game Difference: The difference between games won and lost.
  4. Point Difference: The difference between points won and lost.
  5. Draw: If all else fails, a draw may be used to determine the ranking.

These tiebreaker rules ensure a fair and systematic approach to ranking teams in round-robin tournaments.