- May 23, 2012
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- Tottenham Hotspur, New Orleans Pels
There has been a lot of discussion on this forum this season about the value of stats. Which stats can be trusted? Which stats best capture the value of a player? And so on and so forth.
One of the biggest conundrums centres around the +/- metric. On one hand this is a stat which attempts to measure the most fundamental principle in sport; namely whether Player X is actually helping his team win, or merely just racking up numbers. On the other side of the equation it is widely acknowledged that using +/- in isolation can be problematic because of the number of variables that need to be taken into account. For example which players are sharing the court with Player X? What calibre of players is Player X is mainly playing against? Etc, etc.
The purpose of this thread is to present team and league wide +/- numbers in a way in which they are not usually presented - that is within the context of what their team and teammates accomplish. Also to establish a nice, calm conversation about the pros and cons of pluses and minuses - easy, right?
I don't wish to create a major preamble to this exercise, but for clarity's sake I will put some qualifiers here up front.
This thread is an attempt to place an individual's +/- measurements within the context of his team's (or his team-mates') corresponding measurements. It won't provide the defining measurement of a player's worth, but it will hopefully achieve the aim of nullifying some of the variables which make +/- a tough stat to get a true handle on.
The title of this thread - elasticity - is a reference to how wide or narrow the disparity between a team's most valuable and least valuable +/- player is. On some teams you will note that there is a large corps of players with similarly 'high' or 'low' measurements, meaning the 'elasticity' is minimal. On other teams however you will be able to see that there can be a vast gulf between the value of their best players and their worst - a nominally top-heavy team such as this would thus have 'high elasticity'.
Please not that this is NOT a definitive ranking list of either the players in your chosen team or of the league in general. Rather it is more of an illustration of the groups and groupings of players who help or hinder your team the most. Anomalies will always be present, but so long as you place them within their proper context then hopefully the exercise will prove somewhat worthwhile.
Finally some additional qualifiers and notes:
* I've mainly included players who reached the 450/500 season minutes threshold, or roughly 10% of the team's total on court game time. The exceptions are notable players who were added late in the season, or notable players who missed out through injury of large chunks of the season.
* As always, the smaller the sample size, the more susceptible the measurements are to outside variables. In other words the less minutes a player played, the more likely his +/- could be misleading
* Starters naturally tend to play most of their minutes versus other starters, and likewise bench players against their counterparts. Keep this in mind when judging the merits of starters vs bench contributors.
* For teams who made major mid-season moves, I've tried to include both significant departures as well as arrivals, mainly as an interesting point of comparison.
Please note:
* Nominal starters have been denoted with an asterix next to their names - this has been done so a comparison between individual starters, and also starting and bench groups is easier.
* A players total minutes are represented by the percentage figure next to their name. LeBron James (at 77%) played the highest proportion of his team's minutes league-wide.
* Where a player has both a positive +/- measurement AND performs above the mean for his team, his contribution will be bolded in green. Where a player has a positive +/- figure but is below the mean for his team, the contribution will be bolded in blue. Where a player has a negative +/- but is above the mean for his team, the contribution will be bolded in purple. And finally when a player has a negative +/- AND is below the mean for his team, the contribution will be bolded in red.
* There really is no cake. Sorry.
One of the biggest conundrums centres around the +/- metric. On one hand this is a stat which attempts to measure the most fundamental principle in sport; namely whether Player X is actually helping his team win, or merely just racking up numbers. On the other side of the equation it is widely acknowledged that using +/- in isolation can be problematic because of the number of variables that need to be taken into account. For example which players are sharing the court with Player X? What calibre of players is Player X is mainly playing against? Etc, etc.
The purpose of this thread is to present team and league wide +/- numbers in a way in which they are not usually presented - that is within the context of what their team and teammates accomplish. Also to establish a nice, calm conversation about the pros and cons of pluses and minuses - easy, right?
I don't wish to create a major preamble to this exercise, but for clarity's sake I will put some qualifiers here up front.
This thread is an attempt to place an individual's +/- measurements within the context of his team's (or his team-mates') corresponding measurements. It won't provide the defining measurement of a player's worth, but it will hopefully achieve the aim of nullifying some of the variables which make +/- a tough stat to get a true handle on.
The title of this thread - elasticity - is a reference to how wide or narrow the disparity between a team's most valuable and least valuable +/- player is. On some teams you will note that there is a large corps of players with similarly 'high' or 'low' measurements, meaning the 'elasticity' is minimal. On other teams however you will be able to see that there can be a vast gulf between the value of their best players and their worst - a nominally top-heavy team such as this would thus have 'high elasticity'.
Please not that this is NOT a definitive ranking list of either the players in your chosen team or of the league in general. Rather it is more of an illustration of the groups and groupings of players who help or hinder your team the most. Anomalies will always be present, but so long as you place them within their proper context then hopefully the exercise will prove somewhat worthwhile.
Finally some additional qualifiers and notes:
* I've mainly included players who reached the 450/500 season minutes threshold, or roughly 10% of the team's total on court game time. The exceptions are notable players who were added late in the season, or notable players who missed out through injury of large chunks of the season.
* As always, the smaller the sample size, the more susceptible the measurements are to outside variables. In other words the less minutes a player played, the more likely his +/- could be misleading
* Starters naturally tend to play most of their minutes versus other starters, and likewise bench players against their counterparts. Keep this in mind when judging the merits of starters vs bench contributors.
* For teams who made major mid-season moves, I've tried to include both significant departures as well as arrivals, mainly as an interesting point of comparison.
Please note:
* Nominal starters have been denoted with an asterix next to their names - this has been done so a comparison between individual starters, and also starting and bench groups is easier.
* A players total minutes are represented by the percentage figure next to their name. LeBron James (at 77%) played the highest proportion of his team's minutes league-wide.
* Where a player has both a positive +/- measurement AND performs above the mean for his team, his contribution will be bolded in green. Where a player has a positive +/- figure but is below the mean for his team, the contribution will be bolded in blue. Where a player has a negative +/- but is above the mean for his team, the contribution will be bolded in purple. And finally when a player has a negative +/- AND is below the mean for his team, the contribution will be bolded in red.
* There really is no cake. Sorry.