Because these numbers are broken down per-minute played, how active a player is has a direct impact on their PPI.
The first step in this calculation is done by adding the number of FAILED plays with possession (passes, dekes, etc.) per-minute played to the number of FAILED attempts at removing possession (stick-checks, body-checks, etc.). We then subtract that number from the number of successful possession and defensive-plays per-minute played. The higher the result, the more that player contributes to a team's ability to both maintain and remove puck-possession.
Only even-strength events were used in this calculation. A list of all the events tracked can be found here.
The main difference between this number and player ratings is that ratings include loose-puck recoveries, while positive possession impact does not.
Not surprisingly, PK Subban had the highest positive possession impact among Habs players. Subban contributed 1.40 more successful puck-possession plays than failed plays (both defensive and offensive) per-minute of even-strength ice-time. Recently traded Josh Gorges contributed 1.15 more successful plays than failed plays per-minute, while Andrei Markov contributed 1.13.
Among defensemen, Jarred Tinordi had the lowest positive possession impact, while Douglas Murray also had a low positive-possession impact.
Lars Eller contributed 0.92 more successful possession plays than failed plays per-minute played; tops among Habs forwards. Other players with high positive possession numbers include David Desharnais, Ryan White, Brendan Gallagher, Dale Weise, and Michael Bournival.
George Parros, Thomas Vanek, and Rene Bourque produced the team's lowest positive possession numbers.
