Why eFG% Is Invalid for Measuring the Efficiency of FG Shooting

Whenever you see basketball performance analysis where eFG% is used as the metric to measure the efficiency of FG shooting, you immediately know that the whole analysis is invalid. Since eFG% is widely used, much of the current basketball performance analysis is invalid.

Nothing helps: not the huge amount of the data, not the sophistication of the analysis methods, not the great looks of the graphics. In a way, they only make matters worse since they help hide the invalidity of the underlying assumptions.

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Improving Andre Drummond’s Free Throw

In a previous blog entry, I wrote about shooting and practicing shooting at a general level. Here I try to show how to implement those ideas into a real-life situation.

To make this concrete and familiar, let’s have a look at a much-publicized dilemma: an NBA player’s free throw shooting technique that is flawed and produces bad results. In other words, let’s look at Andre Drummond’s free throw shooting.

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Remarks on Shooting and Practicing Shooting

This entry is an attempt to combine some principles and some nuts and bolts regarding shooting and practicing shooting. Originally, I published this post in March 2015.

In November 2015 I put it back together piece by piece and also added some new remarks. The latest additions were made on Monday Nov 30. Drills related to this entry can be found in this blog entry.

Shooting Accuracy and Efficiency Are Not the Same Thing

For starters we must define the primary goal of shooting practice. That definition is a prerequisite for any intelligent discussion about the subject. That is because if we do not know exactly what shooting practice should accomplish, it is impossible to assess its efficiency.

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