Analytics Glossary
Definitions for every stat used in this platform. Stat abbreviations with a dotted underline show their definition on hover, with a link back here.
Stat of the Day
CF%Corsi For PercentagePossession & Shot Share
Share of all 5v5 shot attempts (goals + shots on goal + missed shots + blocked shots) while on ice. Above 50% means your team is generating more attempts than it allows. The most common possession proxy in hockey analytics.
32 stats defined
Possession & Shot Share
5 stats
- CF%Corsi For Percentage
- Share of all 5v5 shot attempts (goals + shots on goal + missed shots + blocked shots) while on ice. Above 50% means your team is generating more attempts than it allows. The most common possession proxy in hockey analytics.
- Related:FF%SCF%
- FF%Fenwick For Percentage
- Like Corsi, but excludes blocked shots. Some analysts prefer Fenwick because blocked shots may reflect the blocking team's strategy rather than the shooting team's skill.
- Related:CF%SCF%
- SCF%Score-Adjusted Corsi For Percentage
- Corsi adjusted for game score. Teams trailing take more shots (desperation) while leading teams sit back. Score-adjusting removes this bias to give a truer picture of possession quality.
- Related:CF%FF%
- HDCF%High-Danger Chance For Percentage
- Share of high-danger scoring chances (shots from the slot and crease area) at 5v5. A team with high HDCF% is consistently generating quality looks from dangerous areas.
- Related:CF%xG
- CF% RelRelative Corsi For Percentage
- A player's on-ice CF% minus their team's season CF%. Positive means the team controls play better when this player is on the ice. Isolates individual impact from team quality.
- Related:CF%
Shooting & Scoring
11 stats
- xGExpected Goals
- A model-based estimate of how many goals a set of shots should produce, based on shot distance, angle, type, and game situation. Compares actual scoring to what's statistically expected.
- Related:G-xGGSAx
- xGFExpected Goals For
- Total expected goals generated by a team or player's shots. Higher xGF means more quality chances created.
- Related:xGxGA
- xGAExpected Goals Against
- Total expected goals from shots faced. For teams, lower is better (fewer quality chances allowed). For goalies, this is the baseline they're measured against.
- Related:xGxGFGSAx
- G-xGGoals Above Expected
- Actual goals scored minus expected goals. Positive means a player is finishing above expected — could indicate elite skill or unsustainable luck. Large values often regress over time.
- Related:xGSH%
- iCF/60Individual Corsi For per 60 Minutes
- A player's own shot attempts (all types) per 60 minutes of ice time at 5v5. Measures individual shot volume independent of teammates.
- Related:CF%
- SH%Shooting Percentage
- Goals divided by shots on goal. League average is roughly 8-9%. Extremely high or low values tend to regress toward the mean over time.
- Related:PDOG-xG
- A1Primary Assists
- First assists on goals — the last pass before the goal scorer. More predictive of future production than secondary assists, which are often coincidental.
- Related:1stP
- 1stPPrimary Points
- Goals plus primary assists. Filters out secondary assists to focus on the points most likely driven by individual skill rather than being on the ice at the right time.
- Related:A1
- P/60Points per 60 Minutes
- Points scored per 60 minutes of ice time. Normalizes production by ice time so players with different roles and TOI can be compared on an even footing.
- Related:G/60xG/60
Goaltending
6 stats
- SV%Save Percentage
- Saves divided by shots faced. The most basic goaltending metric. Doesn't account for shot quality — a goalie facing hard shots from the slot looks worse than one facing perimeter shots.
- Related:GSAxHDSV%GAA
- GSAxGoals Saved Above Expected
- Expected goals against minus actual goals against. Positive means the goalie stopped more than the model expected — the gold standard for modern goalie evaluation. Accounts for shot quality unlike raw SV%.
- Related:xGASV%HDSV%
- HDSV%High-Danger Save Percentage
- Save percentage on shots from the slot and crease area only. The most important save percentage — stopping high-danger chances separates elite goalies from average ones.
- Related:GSAxSV%
- GAAGoals Against Average
- Goals allowed per 60 minutes of play. A traditional goaltending stat that doesn't account for shot volume or quality faced. Use GSAx for a more accurate picture.
- Related:SV%GSAx
Special Teams
3 stats
- PP%Power Play Percentage
- Goals scored per power play opportunity. PWHL average is roughly 15-17%. A strong PP forces opponents to play disciplined, creating a deterrent effect beyond the raw conversion rate.
- Related:PK%
- PK%Penalty Kill Percentage
- Percentage of opponent power plays killed without allowing a goal. The inverse of the opponent's PP%. A weak PK compounds undisciplined play — penalties become doubly costly.
- Related:PP%
- FO%Faceoff Win Percentage
- Percentage of faceoffs won. Gives initial puck possession after stoppages. More important in the offensive and defensive zones than at center ice.
Advanced / Impact
6 stats
- RAPMRegularized Adjusted Plus-Minus
- A regression model that isolates each player's impact on expected goals, controlling for teammates, opponents, and ice time. The most rigorous single-number player impact metric. Positive = helps the team, negative = hurts.
- Related:xGCF%
- GSGame Score
- Luszczyszyn's linear value metric. For skaters: weighted sum of goals (0.75), primary assists (0.70), secondary assists (0.55), shots (0.075), blocks (0.05), minus penalties taken (−0.15), plus faceoff differential (±0.01), 5v5 on-ice shot attempts for/against (±0.05·(CF−CA)), and plus/minus (0.15). For goalies we use GSAx-based GS: 0.75·(xGA − GA), which is zero-centered so league-average goalies don't accrue credit from raw workload.
- Related:GSVARAPM
- GSVAGame Score Value Added
- Game Score above a replacement-level player on equal ice time. Replacement is the 10th-percentile GS/60 within each position bucket (F/D/G) among qualified players this season. Converted to standings points via a PWHL-fitted GS-per-win constant (~8.6, from GP-weighted OLS on 20 team-seasons — the NHL rule of thumb of 28 was retired once we had enough data to fit it directly). Not identical to The Athletic's GSVA: the PWHL feed doesn't record penalties drawn, and we use a flat per-season replacement baseline rather than Dom's 3-year Bayesian prior.
- Related:GSRAPM
- WARWins Above Replacement
- A single-number estimate of how many wins a player adds over a freely available replacement-level player. For skaters it combines even-strength RAPM impact, finishing, penalty discipline, and faceoffs; for goalies it is GSAx converted to wins. Roughly 5 minutes of ice time is needed before it registers. Because a PWHL season runs about 30 games, single-season WAR is roughly a third of the NHL figures fans know; the leaderboards also show WAR/82, the same value rescaled to a full 82-game season, where about 5 marks a star and 2 a solid regular.
- Related:RAPMGSAxGSVA
- TOITime on Ice
- Total ice time. Coaches deploy their best players more — high TOI usually signals trust. TOI/GP (per game) is the standard format.
- +/-Plus/Minus
- Goals scored minus goals allowed while on ice at even strength. A traditional but deeply flawed metric — heavily influenced by teammates, opponents, and goaltending. Use RAPM or on-ice CF% for a better picture.
- Related:RAPM