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BWF scoring on KSPL

Two rulesets, one engine. Until 3 Jan 2027 every match plays best-of-3 to 21. From 4 Jan 2027, BWF switches to best-of-3 to 15 — and so do we.

At a glance

 3×21 (current)3×15 (from 2027)
Set targetFirst to 21First to 15
Hard cap30 points21 points
Mid-game interval at118
EffectiveUntil 3 Jan 2027 UTCFrom 4 Jan 2027 UTC

Best-of-3 sets and a 2-point winning margin are unchanged. Both rulesets cap the set so a never-ending deuce can't happen.

When a set ends

  • Win normally: reach the target (21 or 15) and lead by 2.
  • Win on the cap: if the score climbs deuce after deuce, the first side to the cap (30 in 3×21, 21 in 3×15) takes the set even by a single point.
  • Win the match: first to 2 sets. Set 3 is only played when the score is tied 1-1.

Intervals & change ends

  • Mid-game interval — 60 seconds. Triggered the first time either side reaches 11 (3×21) or 8 (3×15).
  • Between-games interval — 120 seconds. Sit-down between any two completed sets.
  • Change ends: after each set, and again in the deciding (third) set the first time a side reaches 11 (3×21) or 8 (3×15).

The terminal speaks the score-call automatically (turn voice on in the scoring header). Numbers come from BWF Statutes §4.1.

Service court

Rally-point scoring: the side that wins a rally serves the next one. The court the server stands in is decided by the server's own score:

  • Even score (0, 2, 4 …): serve from the right service court.
  • Odd score (1, 3, 5 …): serve from the left service court.
  • First server in sets 2 and 3: the side that wonthe previous set serves first (Law 9.1).

The umpire screen surfaces the right court each rally so you never need to count points to find out where to stand.

Score-call vocabulary

KSPL uses BWF Section 4.1.5 (Vocabulary) verbatim. The phrases you'll hear from the scoring terminal:

“Love all; play.”
Start of every set.
“Interval — 11-7.”
Mid-game interval triggered (server score first).
“Game point — 20-15.”
One point away from winning the current set.
“Match point — 20-18.”
One point away from winning the match.
“Game won by Red.”
The set is over — players take the 120-second break.
“Match won by Red — 21-18, 14-21, 21-19.”
Final score from the winner's point of view.

How a match can end

  • Normal — played to a result.

    Standard 2-of-3 sets finish.

  • Walkover (W/O) — opponent didn't appear.

    Recorded as 2-0 to the present side, no scoring on court. Used for no-shows or late withdrawals before the first rally.

  • Retired (RET) — injury or withdrawal mid-match.

    Play started, then a side could not continue. The remaining side takes the win; the score on court at the moment of retirement is preserved for the record.

  • Disqualified (DSQ) — code-of-conduct call.

    The umpire (or referee) ends the match against a side for a rules breach. The other side wins and the match counts.

All four outcomes advance the bracket and settle bets the same way — the difference shows up in the match badge and the audit log.

The KSPL team layer

KSPL Official ties are five matches per game (MS, WS, XD, MD, WD). The first team to win 3 matches takes the tie — but we still play all five so the bracket has every result to use as a tiebreaker later.

Tournaments hosted via Organize can pick their own format (round-robin, group + KO, single-elim) and their own ruleset (3×21 or 3×15) at create time.

Authoritative sources

When the BWF document and this page disagree, the BWF document is correct — please report the mismatch.