Can you provide a layperson's definition of "win shares"? Does it work so that win shares are only given if the player's team wins the game? If so, it would favor players who play on winning teams more than those who play on lesser teams, if only because they have more team wins to claim a share of?
@JoePgh , here you go. I hope this helps.
WIN SHARES (WS)
Win shares (WS) is a player statistic that attempts to demonstrate how much overall success a player brings to their team.
According to Basketball-Reference, win shares is a metric that estimates the number of wins a player produces for his team throughout the season. It is calculated using player, team and league-wide statistics and the sum of player win shares on a given team will be roughly equal to that team’s win total for the season.
OFFENSIVE WIN SHARES (OWS)
Offensive Win Shares are credited to players based on
Dean Oliver's points produced and offensive possessions. The process for crediting OWS is:
- Calculate points produced for each player.
- Calculate offensive possessions for each player.
- Calculate marginal offense for each player. Marginal offense is equal to (points produced) - 0.92 * (league points per possession) * (offensive possessions).
- Calculate marginal points per win. Marginal points per win reduces to 0.32 * (league points per game) * ((team pace) / (league pace)).
- Credit Offensive Win Shares to the players.
DEFENSIVE WIN SHARES (DWS)
Defensive Win Shares (DWS) is a player statistic that attributes credit to players based on their ability to prevent opposing teams from scoring. A player’s DWS is calculated by estimating the number of points allowed per 100 defensive possessions.