The 7 Deadly Sins Every GM Should Avoid by Marc Appleby –

Areas Covered

  • PowerScout research overview
  • The two major findings
  • The 7 deadly sins
  • A look at the Oilers this year
If we want players that help our team ‘win’, why don’t we measure them that way?- asked Terry

PowerScout analyzes hockey by focusing on the proven patterns for winning.

Using our key research findings, we create analytical and
technology solutions that help hockey managers & coaches at
every hockey level maximize assets and build winning teams.

  • Research by retired economist Terry Appleby
  •  Over 30 years of statistics research into hockey
  •  Over 14 years studying winning NHL teams
  •  20-yr member of Society of American Baseball Research

Sin #1:

Overestimating the difference in value between average and top-tier goalies

Sin #6:

Overestimating the effectiveness of building a team’s attack through the wing position

Learn more from the presentation below


The Evolution of Hockey Statistics by Bruce McCurdy

Scoring chances

A chance is counted any time a team directs a shot cleanly on-net from within home-plate. Shots on goal and misses are counted, but blocked shots are not (unless the player who blocks the shot is “acting like a goaltender”). Generally speaking, we are more generous with the boundaries of home-plate if there is dangerous puck movement immediately preceding the scoring chance, or if the scoring chance is screened. If you want to get a visual handle on home-plate,

Neilson Numbers

  • Based on ideas of Roger Neilson
  • Assignment of individual responsibility on scoring chances for and against
  • Requires an extra degree of qualitative judgement over and above deciding whether a scoring chance has occurred
  • Eliminates false positives/negatives, however individual numbers don’t reconcile to team totals
  • Fewer recording errors than on-ice scoring chances as players are identified as part of the process
  • Same system can be used to assign unofficial assists on GF or errors on GA
  • Reliant on a knowledgeable scorer, but as with other scoring chance systems, would work better if 3 or 5 scorers worked independently, then pooled results

Learn more form the presentation below: