Official Public Guide

Rankings &Ladder Rules

The complete public guide to the KCS 1v1 ranking algorithm, official ladders, Bubble Rankings, the Top 16 Challenge Gate, movement indicators, rating confidence, Tournament Rankings, records, and corrections.

Policy V297Updated July 17, 2026

View Current Rankings How to Get Ranked

Official Results Only

Separate Men's and Women's 1v1 ladders

Official KCS 1v1 results are the competitive source for the Men's and Women's 1v1 ladders. Tournament results, Tournament Ranking points, and KCS Picks do not change official 1v1 records or directly move either ladder.

Each event is processed as one frozen rating period. Every dancer's pre-event rating and position are captured before the event, every official result is calculated from that same starting state, and the full event is applied together after verification.

Rating & Confidence

Skill estimate with uncertainty

KCS uses a Glicko-style rating approach that tracks both estimated strength and rating uncertainty. Dancers with limited official history can move more quickly because the system has less evidence about their level, while established records are treated more conservatively.

Opponent strength and the official result drive the rating change. Judge decisiveness may provide a modest adjustment, but fan popularity and raw numbered-rank gaps do not control the competitive rating.

Active Status

Activity affects confidence, not career history

A dancer's official history is not erased by inactivity. After 180 days without an official 1v1 result, confidence may begin to decline. At 365 days or more, KCS may mark the dancer inactive until they return through an eligible official matchup.

An inactive or limited-activity status can affect contender eligibility and how confidently the public ladder treats an older rating, but it does not rewrite completed results.

Official 1v1 Methodology

How the 1v1 algorithm works

The public ladder is powered by a Glicko-style strength model with uncertainty. The goal is to reward quality official wins, keep established records stable, let limited-history dancers find their level faster, and process every battle at the same event fairly.

Frozen pre-event state

Before an event is calculated, KCS locks each dancer's rating, rating uncertainty, official record, and published position. Later results from the same event cannot change another battle's starting point.

Expected result

The model compares both dancers' estimated strength and confidence. A result against stronger opposition is less expected and therefore carries more rating value than an expected win.

Verified result update

The winner gains rating and the loser loses rating. Judge decisiveness may provide a modest adjustment, but the official result and opponent quality remain the main competitive inputs.

Event-batched processing

Every verified result from the event is calculated from the same frozen snapshot and applied together. Publishing one result earlier than another cannot change the rating math.

Conservative public order

The public ladder uses updated strength adjusted for uncertainty. Activity status and the Top 16 Challenge Gate are then applied before the official positions and movement labels are published.

Competitive inputs

Verified official KCS 1v1 win or loss
Opponent rating and rating uncertainty
The dancer's own rating uncertainty and official history
A modest judge-decision adjustment when supported by the verified result
Activity status and the Top 16 Challenge Gate when publishing the ladder

Excluded from the rating

Tournament Ranking points or tournament W-L
KCS Picks, Fan %, Power %, or popularity
Raw bonuses based only on numbered rank separation
Publication order within the same event
Dancer-specific manual movement without a verified correction

A win always improves the winner's underlying rating and a loss lowers the loser's underlying rating. A numerical rank changes only when the final conservative scores and published ladder rules place one dancer ahead of another.

Bubble Rankings

Top 16 Challenge Gate

The active 1v1 ladder is ranks 1–16. Bubble Rankings begin at rank 17. A Bubble-ranked dancer cannot enter the Top 16 through rating alone, a field shift, inactivity, tournament performance, or a win over another Bubble-ranked dancer.

1The challenger must defeat an opponent whose frozen pre-event rank was inside the Top 16 in an official KCS 1v1 battle.
2The successful challenger takes the defeated dancer's exact frozen Top 16 position.
3The defeated Top 16 dancer moves to the challenger's former Bubble position.
4All challenge results are applied after the full event is processed from the frozen pre-event ladder.

Movement Indicators

How public movement is displayed

↑

Moved up

The dancer's official position improved after the ranking update.

↓

Moved down

The dancer's official position moved lower after the ranking update.

—

Held

The dancer held the same published position.

NEW

New entry

The dancer entered this public ranking lane for the first time.

Returning

The dancer returned to the active published ladder.

OUT

Outside the published field

The dancer moved outside the current public ranking range.

A field shift can change a dancer's numerical position because another dancer moved around them. KCS may describe that context separately so a passive field shift is not presented as an earned result.

Tournament Rankings

Separate points and records

Points

50 points per official tournament round win

Tournament Rankings are a separate season points race. Each official KCS tournament bracket round win earns 50 points. Tournament W-L remains separate from official 1v1 W-L.

A first-round or Top 16 bracket loss displays 0-1 · 0 PTS.
A prelim-only appearance with no official bracket battle displays — · 0 PTS.
Tournament results never convert into official 1v1 wins or losses.

Tie Break

Recent tournament participation receives priority

When dancers are tied on Tournament Ranking points, the dancer whose most recent tournament appearance is newer ranks ahead. Participation in the latest tournament takes priority over preserving an older rank order.

Road to DS6

The cutoff follows the published Tournament Rankings

The Road to DS6 cutoff is shown after rank 16 on the Tournament Rankings tab. KCS may publish projected qualification labels, but projections are not final qualification until the season criteria are satisfied and officially confirmed.

Corrections

Verified errors can be corrected

KCS may correct clerical, scoring, identity, eligibility, publication, or technical errors. Corrections should preserve the same dancer identity, official result history, and available audit record rather than creating duplicate profiles or rewriting unrelated data.

Submit a Ranking Correction

Names & Aliases

One dancer, one official history

Confirmed aliases, spelling variants, or historical event names are resolved to the same dancer identity. Alias resolution may change the displayed name or attach older results to the correct profile, but it must not duplicate wins, losses, points, or ranking history.

Common Questions

How does the official KCS 1v1 ranking algorithm work?

KCS freezes every dancer's pre-event rating and uncertainty, estimates each result from opponent strength and confidence, gives the winner rating credit while the loser loses rating, and applies every verified result from the event together. The public ladder then uses a conservative strength score, activity rules, and the Top 16 Challenge Gate.

Can a Bubble-ranked dancer enter the Top 16 from rating alone?

No. A dancer ranked 17 or lower must defeat an opponent whose frozen pre-event rank was inside the Top 16 in an official KCS 1v1 battle. The challenger then takes the defeated dancer's exact Top 16 position.

Do tournament results move the official 1v1 ladder?

No. Tournament Rankings and official 1v1 rankings are separate. Tournament results do not change official 1v1 records or automatically move a dancer on the Men's or Women's 1v1 ladder.

How many Tournament Ranking points is a round win worth?

Each official KCS tournament round win is worth 50 Tournament Ranking points.

What does a prelim-only Tournament Ranking record show?

A dancer who appeared in prelims but never entered an official bracket battle displays a dash and 0 points rather than a 0-0 bracket record.

Can KCS correct a published ranking or record?

Yes. KCS may correct verified clerical, identity, scoring, eligibility, publication, or technical errors while preserving the official source history and audit trail.

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