Method
Win shares
- Method
ws-v0- Version
ws-v0- As of
- 2026-10-08
- Family
- Value metrics
- Grain
- player x season
Cohort rule
z against the season's rotation cohort (rel-v0 is_rotation: 15+ min/g, half-of-max games rule); rendered in the 2023-24 rotation mean and spread (the era-v0 transform)
Stats this method computes
| Key | Name | Definition | Unit | Transform |
|---|---|---|---|---|
ows | Offensive win shares (OWS) | Wins credited to a player's offense: points produced above 0.92 x league points per possession over the player's offensive possessions, divided by the season's marginal points per win. | wins | |
dws | Defensive win shares (DWS) | Wins credited to a player's defense: the player's minutes share of team defensive possessions times (1.08 x league points per possession minus the player's defensive rating per possession), divided by the season's marginal points per win. | wins | |
ws | Win shares (WS) | Offensive plus defensive win shares: the wins a player's box production is credited with above replacement. | wins | |
ws_per_48 | Win shares per 48 minutes (WS/48) | Win shares per 48 minutes played (league average is about 0.100). | wins per 48 minutes | |
ws_per_48_era | Win shares per 48, era-normalized (WS/48 era) | WS/48 rendered in the 2023-24 league: the season's z-score against its rotation cohort, times the 2023-24 spread, plus the 2023-24 mean (the era-v0 rung-3 transform). Ranks within a season never move. | wins per 48 minutes (2023-24 scale) | era |
ws_era | Win shares, era-normalized (WS era) | Win shares from the era-normalized rate: WS/48 era x minutes / 48. | wins (2023-24 scale) | era |
post_ows | Offensive win shares, postseason (OWS post) | Wins credited to a player's offense: points produced above 0.92 x league points per possession over the player's offensive possessions, divided by the season's marginal points per win. Postseason scope: the same method over the season's postseason games only (team sums, possessions, the opponent solve and league constants from those games; VORP prorates by postseason team games over 82). Play-in rows carry none; no era variant. | wins | |
post_dws | Defensive win shares, postseason (DWS post) | Wins credited to a player's defense: the player's minutes share of team defensive possessions times (1.08 x league points per possession minus the player's defensive rating per possession), divided by the season's marginal points per win. Postseason scope: the same method over the season's postseason games only (team sums, possessions, the opponent solve and league constants from those games; VORP prorates by postseason team games over 82). Play-in rows carry none; no era variant. | wins | |
post_ws | Win shares, postseason (WS post) | Offensive plus defensive win shares: the wins a player's box production is credited with above replacement. Postseason scope: the same method over the season's postseason games only (team sums, possessions, the opponent solve and league constants from those games; VORP prorates by postseason team games over 82). Play-in rows carry none; no era variant. | wins | |
post_ws_per_48 | Win shares per 48 minutes, postseason (WS/48 post) | Win shares per 48 minutes played (league average is about 0.100). Postseason scope: the same method over the season's postseason games only (team sums, possessions, the opponent solve and league constants from those games; VORP prorates by postseason team games over 82). Play-in rows carry none; no era variant. | wins per 48 minutes |
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