Glossary & Icon Key

What every number, badge, and term means. For the how and why, read the Methodology.

Icon Key

Asset Flags

MegalodonExtreme franchise-value tier above the top NAV threshold.
Franchise / CoreFranchise marker on asset cards; core-player section marker in selectors.
Surplus / PedigreeSurplus contract, award signal, prospect marker, or elite shutdown pedigree when paired with text.
Prospect / DepthProspect marker or depth-player section marker.
Prospects & ELCProspects and entry-level contract grouping in asset selectors.
Draft PicksDraft-pick grouping in asset selectors.
Injury RiskLedger note for elevated injury risk.
Change of SceneryNegative but recoverable NAV profile that may fit another roster better.
Salary DumpDeeply negative or high-risk contract warning.
UntouchableAvailability gate — player is marked untouchable and will not appear in trade proposals.
Trade BlockPlayer has been placed on the trade block by their team.
Find PartnersTriggers a league-wide search for the best trade partners for this player.

Modern Role Icons

Puck-Moving AnchorDefenseman who exits clean and enters controlled — play travels north on his stick, not off the glass.
Neutral Zone EngineForward who carries through center ice for controlled entries — the transition game runs through him.
High-Danger DistributorSeeks the cross-seam and low-to-high pass — sets up high-probability chances instead of settling for perimeter shots.
Rush WeaponCounterattack specialist — top-end speed and finishing on odd-man rushes.
Slot HunterOff-puck mover who finds soft high-danger ice in the slot for quick releases and deflections.
Net-Front DisruptorLives at the blue paint — screens, tips, and low-slot rebounds. Goalie sightlines are never clean.
Volume ShooterDrives offense by putting pucks on net relentlessly — the chances come from quantity plus a quick trigger.
Forecheck MonsterOffensive-zone recoveries and forced turnovers — possession is sustained by pressure, not skill plays.
Perimeter LockdownDefenseman who forces rushes outside and denies clean blue-line entries — the middle of the ice is closed.
Complete ShutdownCenter who suppresses opponent expected goals shift after shift — the matchup assignment coaches trust.
Floor RaiserHigh-usage driver who carries a lineup — transition, minutes, and self-created offense keep a team afloat.
Ceiling RaiserAdaptable elite complement — suppression, forechecking, or off-puck play that makes a great line greater.
Workhorse WallStarter workload with saves above expected — the net is his every night and the team banks points for it.
High-Danger EraserElite on grade-A chances — the slot shot that beats most goalies gets erased here.
Storm CellarPositive goals saved above expected behind a leaky defense — the reason the scoreboard stays respectable.
Tandem WeaponSplit workload, elite efficiency per start — a 1B who wins his half of the calendar.

Gravity Tiers

SupermassiveGravity v3 tier: the largest positive bounded modelled fields in the current position-relative calibration.
StarGravity v3 tier: an elite positive bounded field across one or more modelled zones.
Main SequenceGravity v3 tier: a strong positive position-relative territorial influence index.
SatelliteGravity v3 tier: a modest positive position-relative territorial influence index.
AsteroidGravity v3 tier: a bounded field near the current position-relative reference.
Black HoleGravity v3 tier: a strongly negative position-relative modelled field.

Gravity v3 reports three bounded, position-relative zone masses — an offensive-zone well, a neutral-zone transition-proxy well, and a defensive-zone dome. The field is a model visualization of those components, not an observed player-tracking heatmap. Reliability is a coverage/stability index rather than a probability, and missing evidence shrinks the estimate toward neutral. Signal Stability is based mainly on current-versus-baseline on-off agreement, with a legacy defenseman pair-driver adjustment; it is not a fitted portability model. The public situation label is MIXED SITUATIONS because v3 combines all-situations, 5v5, 5-on-4, 4-on-5, and regular-season EDGE aggregate inputs.

Player Valuation

How the app turns a player, contract, and role into tradeable asset value.

X-NAV
Extended Net Asset Value: the Ledger's skater trade-value model. Offense, defense, gravity, age curve, contract surplus, deployment, Point Shares, and role context priced into one number.
G-NAV
X-NAV for goalies. Built around GSAx, workload, save profile, team defensive context, age, and contract surplus.
Prospect NAV
Pre-NHL value comes from draft pedigree and stored NHLe production. No-signal ELC players do not receive automatic cap or age value.
OFF / DEF
On-ice components: offensive production and creation on one side, suppression and defensive value on the other, each judged against position.
GRAV
The X-NAV handoff from Gravity v3. It contains only the bounded neutral-zone transition proxy; direct offense and defensive suppression are valued elsewhere.
Modelled Field
The warped rink is a visualization generated from three model components. It is not an observed tracking heatmap or a map of puck trajectories.
Signal Stability
A v3 heuristic based mainly on current-versus-baseline on-off agreement, with a legacy defenseman pair-driver adjustment. It does not estimate portability.
Reliability
A 0–100 v3 sample, stability, and data-coverage index. It is not a calibrated probability.
Data Coverage
The share of fixed v3 zone weight backed by present inputs. Missing evidence shrinks an estimate toward neutral and lowers reliability.
Mixed Situations
Gravity v3 combines all-situations, 5v5, 5-on-4, 4-on-5, and regular-season EDGE aggregate inputs. It is not a single-strength model.
CAP
Contract component. Positive means the player is under market value; negative means the cap hit or term drags value.
AGE / YNG
Age-curve component: decline drag for veterans, youth projection for young NHL players with enough real signal. Not a blanket ELC bonus.
UPS
Upside component — development ceiling for players whose trajectory has not fully priced into production yet.
Negative NAV
Negative value does not mean a bad player. It means the contract is a trade liability relative to expected production, term, and market fit.

STRAND Glossary

The roster-DNA layer that describes style, usage, and development fit.

STRAND
Stylistic Trait & Rating Analysis for NHL Development: a team/player identity view for role fit, timeline, and roster balance.
SCR
Scoring pace. Points per 82 games, normalized by position so defencemen and forwards are not judged on the same raw scale.
xG
Expected-goals creation from shot quality and volume, not just shot count.
TOI+
Ice-time trust and role load. Heavy minutes imply broader usage and higher coaching trust.
SUPP
Expected-goals-against suppression relative to teammates. Positive means the team leaks fewer chances with that player on ice.
QoC Index
0-100 even-strength deployment difficulty based on matchup and usage context.
DZ%
Defensive-zone start share. High usage here can indicate trusted defensive deployment.
HD Finish
High-danger finishing vs league expectation, from NHL EDGE shot-location data. Positive = converts quality chances above league rate.
20+ Bursts
Count of 20+ mph skating bursts from NHL EDGE tracking — a direct speed-in-game signal, not a one-off top speed.
AGE
Development and decline curve over the life of the contract.

Modern Roles

Derived identity labels — what a player actually does, computed from tracking, deployment, and creation-mix data.

Puck-Moving Anchor
D — clean exits and controlled entries; play travels north on his stick, not off the glass.
Neutral Zone Engine
F — carries through center ice for controlled entries; the transition game runs through him.
High-Danger Distributor
Seeks cross-seam and low-to-high passes that create high-probability chances.
Rush Weapon
Counterattack specialist — top-end speed and finishing on odd-man rushes.
Slot Hunter
Off-puck movement into soft high-danger slot ice for quick shots and deflections.
Net-Front Disruptor
Screens, tips, and low-slot rebounds — goalie sightlines are never clean.
Volume Shooter
Drives offense by directing pucks at net relentlessly.
Forecheck Monster
Offensive-zone recoveries and forced turnovers sustain possession.
Perimeter Lockdown
D — forces rushes outside and denies clean blue-line entries.
Complete Shutdown
C — suppresses opponent expected goals while on the ice; the trusted matchup assignment.
Floor Raiser
High usage — carries a lineup through transition, minutes, and self-created offense.
Ceiling Raiser
Adaptable elite complement — suppression, forechecking, or off-puck play that elevates a top line.
Workhorse Wall
G — starter workload with saves above expected; the net is his every night.
High-Danger Eraser
G — elite on grade-A chances; the slot shot that beats most goalies gets erased.
Storm Cellar
G — positive GSAx behind a leaky defense; keeps the scoreboard respectable.
Tandem Weapon
G — split workload with elite efficiency per start; wins his half of the calendar.

Trade Logic

The audit layer that decides whether a deal is plausible, not just mathematically balanced.

GM Audit
Checks clauses, cap legality, retention, roster slots, surplus gaps, timeline alignment, and contention-window fit.
EWA
Estimated Wins Added: translates asset value into standings impact, adjusted by team context.
CWI
Contention Window Index: estimates whether a trade extends, compresses, or harms a team's competitive window.
REQUESTED
Formal trade request. Positive X-NAV receives a small leverage haircut.
SHOPPED
Available or being explored by the team. No automatic X-NAV penalty.
UNTCH
Untouchable availability gate. Value remains visible, but proposal logic treats the player as unavailable.
Role Tags
First-line, middle-six, top-pair, shutdown, starter, tandem, backup, and specialist tags summarize usage/value tier.

Data & Sources

The Hockey Ledger is only possible because these sources publish world-class hockey data. Sincere thanks to each of them.

NHL API
Rosters, positions, ages, game logs, current-season summary data, and NHL EDGE tracking (zone time, speed, shot location).
MoneyPuck
Skater and goalie analytics including xG, deployment, on/off impact, and GSAx inputs. An indispensable public resource.
CapWages
Contract, cap hit, term, clause, extension, and roster metadata source.
Hockey-Reference
Point Shares and historical context for career baselines.
NHLe
Non-NHL production translated to NHL point pace for prospects. It must come from stored or imported production data.
AI Notes
AI is used for narrative explanation only; X-NAV and Gravity calculations stay in deterministic app code.

Analytical estimates only. Player values move with injury, role, performance, contract status, source coverage, and team context.