Concepts
Hockey analytics glossary
Short definitions of the hockey analytics terms clubs, coaches, scouts and media actually use. Conceptual — not a promise of every model variant. For buying analytics work, see services for teams.
- Hockey analytics
- Using repeatable hockey data (shots, expected goals, ice time, zone plays, salaries where public) to answer decisions — recruitment, usage, opponent prep, storytelling — instead of relying only on goals and points.
- Expected goals (xG)
- Each shot gets a 0–1 probability of becoming a goal based on factors such as location, shot type, traffic and game situation. Team or player xGF% is the share of expected goals for versus against while on ice.
- Corsi (CF%)
- All shot attempts: shots on goal, misses and blocks. CF% is the share of those attempts for versus against. A volume and zone-time proxy that can diverge from xG when shots come from low-danger areas.
- Fenwick (FF%)
- Like Corsi but excluding blocked shots — unblocked shot attempts only. Some analysts prefer it when blocking rates differ by system.
- GSAX (goals saved above expected)
- Goaltender measure: actual goals against compared with expected goals against from shot quality faced. Positive GSAX means the goalie prevented more goals than an average goalie on the same shots.
- PDO
- On-ice shooting percentage plus on-ice save percentage. League average sits near 100; extreme PDO often regresses as finishing and save luck even out.
- High-danger chances
- Shots from the highest-probability areas (typically slot / crease). A subset of the quality signal that xG models also capture.
- Zone entry / exit
- How a team enters or leaves the offensive or defensive zone (carry, dump, pass). Controlled entries usually create better shot quality than dump-ins.
- WiseHockey / Wise Hockey
- Club-owned tracking used by many European organisations. THA integrates WiseHockey feeds only inside consulting engagements; that data stays private to the client and is not mixed into public example analyses.
FAQ
- What is hockey analytics?
- Hockey analytics means using structured data — shot attempts, expected goals, ice time, zone plays and matched player IDs — to support decisions that traditional box scores alone cannot. At The Hockey Analytics it also means delivering those readings as scoped projects for clubs, media and scouts.
- What is the difference between Corsi and xG?
- Corsi counts all shot attempts equally (volume / territorial proxy). Expected goals (xG) weights each shot by estimated scoring chance. High Corsi with low xG often means perimeter volume without danger.
- Where can clubs buy custom hockey analytics from THA?
- Email to scope a package on /for-teams — single question, deep dive, season partner, or WiseHockey / InStat integration. Public example analyses live under /analyses.