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Badminton Tournament
Rulebook & Guide

How group standings work, how teams are seeded, and how the knockout bracket is drawn — based on BWF-compliant rules.

1. Group Standings 2. Top 2 Selection 3. Cross-Group Seeding 4. R16 Pairing 5. Full Bracket 6. Rules & Edge Cases

How Group Standings Are Calculated

In the group stage every team plays every other team in their group once (Round Robin). Standings follow BWF-compliant tie-breaking rules applied in strict order.

Match Format

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Number of Sets

e.g. 1 set or 3 sets per match

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Points per Set

e.g. first to 15 or first to 21

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Winning Rule

e.g. golden point OR lead by 2 with cap

These are examples only. The exact number of sets, points per set, and winning rule (golden point or lead-by-2 with cap) are all decided by your HR organiser before the tournament. These settings can also differ between the round robin phase and the knockout phase. Your HR team will communicate the format before play begins. The same format applies equally to all sets within a match — there is no separate rule for a deciding set.

BWF Tie-Breaking — Applied in This Strict Order

When two or more teams share the same number of match wins, the criteria below are tested one by one until the tie is broken.

Matches Won

Always the primary criterion. Team with more match wins ranks higher.

Head-to-Head Result

Applied ONLY when exactly 2 teams are tied on matches won. Who won their direct match?

Game Difference (ALL matches)

Sets Won − Sets Lost across every match played in the group. Head-to-head cannot apply to 3+ tied teams, so game difference steps in.

Point Difference (ALL matches)

Points Won − Points Lost across all group matches.

Head-to-Head (second chance)

If after steps 3–4 the remaining tie reduces to exactly 2 teams, head-to-head is re-applied between those two.

Random Draw

All criteria above are equal. Teams are drawn by lot.

Example A — Clear Standings (No Tie)

Group of 5 teams. Each team plays 4 matches. No teams share the same number of wins — straightforward ranking.

Pos	Team	Played	Won	Lost	Sets W–L	Pts W–L	Advances?
🥇 1st	Team A	4	4	0	8–1	169–96	Winner
🥈 2nd	Team B	4	3	1	6–3	155–112	Runner
3rd	Team C	4	2	2	4–4	140–138	—
4th	Team D	4	1	3	2–6	108–152	—
5th	Team E	4	0	4	0–8	88–169	—

Team A qualifies as Group Winner (Seed 1–8 pool). Team B qualifies as Runner-up (Seed 9–16 pool).

Example B — 2-Team Tie → Head-to-Head Applied (Step 2)

Team B and Team C both finished with 2 wins. Exactly 2 teams tied — Step 2 applies directly.

Pos	Team	Won	Sets W–L	Pts W–L	Tie-Breaker Used
🥇 1st	Team A	3	6–2	155–110	—
🥈 2nd	Team B	2	4–4	142–138	✓ Beat Team C
3rd	Team C	2	4–4	140–136	✗ Lost to Team B
4th	Team D	1	2–6	108–152	—
5th	Team E	0	0–8	88–169	—

Step 2 applied: B and C both had 2 wins. Their head-to-head match: B defeated C. B ranks 2nd, C ranks 3rd.

Example C — 3-Team Tie → Game Difference Applied (Step 3)

Teams B, C and D all finished with 2 wins. Head-to-head cannot apply to 3 teams — Step 3 (Game Difference) resolves it.

Pos	Team	Won	Sets W–L	Set Diff	Tie-Breaker
🥇 1st	Team A	4	8–0	+8	—
🥈 2nd	Team B	2	6–3	+3	Best set diff
3rd	Team C	2	5–5	0	Mid set diff
4th	Team D	2	3–7	−4	Worst set diff
5th	Team E	0	0–8	−8	—

Step 3 applied: B, C, D all had 2 wins — head-to-head cannot apply to 3. Game Difference (sets): B = +3, C = 0, D = −4. Tie broken: B = 2nd, C = 3rd, D = 4th.

Example D — 3-Team Tie, Same Game Diff → Point Difference (Step 4), Then Head-to-Head (Step 5)

Teams B, C, D all have 2 wins AND the same set difference (Step 3 fails). Point difference breaks it further. If it reduces to 2 teams, Step 5 re-applies head-to-head.

Team	Won	Set Diff	Pts W–L	Pts Diff	Step Used	Rank
Team B	2	+1	144–136	+8	Step 4	🥈 2nd
Team C	2	+1	138–138	0	Step 5 (H2H)	3rd
Team D	2	+1	138–138	0	Step 5 (H2H)	4th

Steps 4 + 5: B separates by point diff (+8). C and D are still equal — tie reduces to exactly 2 teams, so head-to-head re-applies. C beat D in their direct match → C is 3rd, D is 4th.

Top 2 Per Group → 16 Teams Qualify for Knockout

In a standard 8-group tournament the top 2 teams from each group advance. That is 8 Group Winners + 8 Group Runners-up = 16 qualifying teams.

Group	🥇 Winner → Seed 1–8 pool	🥈 Runner-up → Seed 9–16 pool	Eliminated
Group 1	Winner G1	Runner G1	3rd, 4th, 5th…
Group 2	Winner G2	Runner G2	3rd, 4th, 5th…
Group 3	Winner G3	Runner G3	3rd, 4th, 5th…
Group 4	Winner G4	Runner G4	3rd, 4th, 5th…
Group 5	Winner G5	Runner G5	3rd, 4th, 5th…
Group 6	Winner G6	Runner G6	3rd, 4th, 5th…
Group 7	Winner G7	Runner G7	3rd, 4th, 5th…
Group 8	Winner G8	Runner G8	3rd, 4th, 5th…

Important: "Winner of Group 1" does NOT automatically become Seed 1. All 8 winners are re-ranked against each other, and all 8 runners-up are re-ranked against each other, using a fair cross-group formula. See Section 3.

Cross-Group Seeding — How Seeds 1–16 Are Assigned

Why can't we compare raw stats across groups?
Groups may have different sizes (5-team vs 6-team groups). A team in a bigger group plays more matches — raw win counts are unfair. Everything is converted to ratios so every team is judged on the same scale.

Step 1 — Compute 3 Normalized Ratios per Team

Match Win Ratio = Matches Won ÷ Matches Played Set Diff Ratio = (Sets Won − Sets Lost) ÷ (Sets Won + Sets Lost) Point Diff Ratio = (Points Won − Points Lost) ÷ (Points Won + Points Lost)

Step 2 — Calculate Weighted Seeding Score

Score = (0.5 × Match Win Ratio) + (0.3 × Set Diff Ratio) + (0.2 × Point Diff Ratio)

Match wins carry the most weight (50%). Set performance matters next (30%). Points complete the picture (20%).

Step 3 — Assign Seeds in Two Separate Pools

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Seeds 1 – 8

8 Group Winners ranked by:
Match Win Ratio → Set Diff Ratio
→ Point Diff Ratio → Score

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Seeds 9 – 16

8 Group Runners-up ranked by:
Match Win Ratio → Set Diff Ratio
→ Point Diff Ratio → Score

Two separate pools — not one combined pool. A Group Winner who had a weak tournament is still seeded 1–8. A Group Runner-up who dominated their group is still seeded 9–16. This preserves the reward for finishing 1st in your group.

Example — Seeding 8 Group Winners into Seeds 1–8

All from different groups. Note: Team Delta (G1) and Team Alpha (G3) both had perfect win ratios — Set Diff Ratio breaks them.

Seed	Team	Group	Win Ratio	Set Diff R.	Pts Diff R.	Score
#1	Team Alpha	G3	1.000	+0.778	+0.248	0.824
#2	Team Delta	G1	1.000	+0.600	+0.196	0.779
#3	Team Echo	G5	0.800	+0.556	+0.182	0.703
#4	Team Foxtrot	G2	0.800	+0.429	+0.141	0.671
#5	Team Golf	G7	0.750	+0.333	+0.108	0.642
#6	Team Hotel	G4	0.750	+0.200	+0.091	0.613
#7	Team India	G8	0.600	+0.143	+0.063	0.555
#8	Team Juliet	G6	0.600	0.000	+0.021	0.504

The 8 Runners-up are ranked the same way to assign Seeds 9–16.

R16 Pairing — BWF Fixed Bracket Structure

Once seeds 1–16 are assigned the R16 pairings follow a fixed structure. The top seeds are kept as far apart as possible so the best teams only meet in the later rounds.

Match 1

Seed 1vsSeed 16

Best Winner vs Weakest Runner

Match 2

Seed 8vsSeed 9

Weakest Winner vs Best Runner

Match 3

Seed 5vsSeed 12

Match 4

Seed 4vsSeed 13

Match 5

Seed 3vsSeed 14

Match 6

Seed 6vsSeed 11

Match 7

Seed 7vsSeed 10

Match 8

Seed 2vsSeed 15

2nd Best Winner vs 2nd Weakest Runner

Why this structure? Seed 1 and Seed 2 are placed in opposite halves of the bracket — they can only meet in the Final. Seeds 3 and 4 are also in separate halves — they can only meet in the Semi-Finals at the earliest. This mirrors the official BWF knockout seeding format.

Full Bracket — R16 → QF → SF → Finals

The 16-team knockout bracket is split into two halves. Each half feeds one Semi-Final. The two SF winners meet in the Final.

Half	R16 Match	→ Quarter-Final	→ Semi-Final	→ Final
TOP HALF	Seed 1 vs Seed 16	QF 1	SF 1	🏆 FINAL
	Seed 8 vs Seed 9	QF 1
	Seed 5 vs Seed 12	QF 2
	Seed 4 vs Seed 13	QF 2
BOTTOM HALF	Seed 3 vs Seed 14	QF 3	SF 2
	Seed 6 vs Seed 11	QF 3
	Seed 7 vs Seed 10	QF 4
	Seed 2 vs Seed 15	QF 4

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Round of 16

16 teams · 8 matches

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Quarter-Finals

8 teams · 4 matches

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Semi-Finals

4 teams · 2 matches

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Final

2 teams · 1 match

3rd Place: The two Semi-Final losers may play a dedicated 3rd place match (if enabled by the organiser). If not, 3rd place is awarded to the Semi-Final loser with the better seeding score.

Rules & Edge Cases

Withdrawals

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Withdrawn Before Any Match

Team is removed completely. All their scheduled matches are removed too. Remaining teams' stats are unaffected.

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Withdrawn After ≥1 Match Played

Team is removed AND all their matches are deleted — including already-played ones. Other teams' standings are recalculated without any of those results.

Walkovers

Walkovers are NOT recorded as 21–0. A walkover means one team fails to appear. The match is treated as non-played and handled through the withdrawal/sanitization process — it does not appear in any team's stats or affect standings calculations.

Unequal Group Sizes

When teams cannot divide evenly across groups (e.g. 42 teams, 8 groups), some groups will have one more team than others. This is expected and handled fairly — all cross-group comparisons use ratios not raw counts, so a team in a 6-team group is never disadvantaged compared to one in a 5-team group.

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Badminton TournamentRulebook & Guide