View Full Version : How is offensive and defensive win shares found?

Sadds The Gr8
01-11-2011, 02:07 PM
Like how are they found? What are the formulas for them and stuff? Just wondering.

01-12-2011, 06:05 PM
Im pretty sure its in the glossary for BBR

01-12-2011, 07:40 PM
Im pretty sure its in the glossary for BBR

It is: http://www.basketball-reference.com/about/ws.html

But they don't show how to calculate points produced. I believe the only place that shows how to calculate that is Dean Oliver's book.

Sadds The Gr8
01-16-2011, 12:50 AM
cool thanks alot

01-18-2011, 12:36 AM
cool thanks alot

PM Den, hes been reading the book . Dont know where my copy is

01-18-2011, 09:49 AM
Im pretty sure its in the glossary for BBR


A lot of people don't know what this means or what it is for, but here is an explanation.

A Win Share determines how much you are responsible for your team winning. It basically says who is the most important player on the team giving the production for your team to win.


James made team Win Shares directly proportional to team wins. In his system, a baseball team that wins 80 games will have exactly 240 Win Shares, a baseball team that wins 90 games will have exactly 270 Win Shares, etc. In my system, a basketball team that wins 50 games will have about 50 Win Shares, give or take.

James did not allow for the possibility of negative Win Shares. In his system, the fewest number of Win Shares a player can have is zero. In my system, a player can have negative Win Shares. I justify this by thinking about it in the following way: a player with negative Win Shares was so poor that he essentially took away wins that his teammates had generated.

So if a team wins 60 games, it spreads across the team to determine how much each player is reponsible for the team winning and thus each player gets a win share.

So let's take for example the Bulls.


If you look at them you will see that in the ADVANCED section on basketball-reference and all the way to the right you will see WS (which stands for Win Shares), it shows who the leader is on the team and the impact they have on the teams wins.

These are your yearly Win Share leaders


01-22-2011, 04:55 AM
I find tiering players based on FGA and FTA helps give a better picture of go to guys rather than just simply efficient guys. For example, WS/48 for rookies who have played 30+ games and at least 15 mpg

Blake Griffin
Derrick Favors
Landry Fields
Gary Neal
Greg Monroe
Evan Turner
Al-Farouq Aminu
Wesley Johnson
DeMarcus Cousins
Eric Bledsoe
But we can look at their "usage" without looking up their USG% through volume output. Derrick really isn't a guy who can take guys 1 on 1 at this point in his career so even though he has been more efficient than Greg Monroe or DeMarcus Cousins, we shouldn't make WS the end all in comparing guys (something a lot of people have been doing).