What is Effective Field Goal Percentage? (eFG% Explained)

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Over the previous couple of a long time, basketball statistics and evaluation has moved forwards by leaps and bounds, altering how folks watch, play, and consider the sport.

Nothing has had a much bigger affect on the sport than the explosion of three level taking pictures which has grown exponentially over time.

And with that, we’re in search of higher methods to judge taking pictures capacity.

Let’s take a better take a look at efficient area aim proportion (eFG%), the way it differs from area aim proportion (FG%), and the way you should use it get a greater concept of your group’s offensive sport.

What’s Efficient Area Aim Proportion?

One of the necessary new statistics is efficient area aim proportion.

It was first launched in 2002 by Dean Oliver in his ebook, “Basketball on Paper”

(Which is likely one of the 100 books we recommend all coaches read before they die)

Dean acknowledged the shortcomings of area aim proportion and proposed Efficient Area Aim proportion (eFG%) — considered one of his “4 elements” to foretell a group’s success.

It is a easy calculation that weighs the additional advantage {that a} made three pointer has, permitting for extra correct analysis of each groups and particular person gamers.

This had made some “conventional” statistics like area aim proportion considerably antiquated.

Why Is It Vital?

Common area aim proportion, very similar to batting common in baseball, doesn’t do an amazing job of absolutely explaining a participant’s offensive contribution.

Efficient area aim proportion does a greater job as a result of it:

  • Correctly weighs the worth of a 3 pointer in comparison with a made two level basket.
  • Is a greater indicator for earlier and future offensive efficiency.
  • Removes the bias of a better general area aim proportion.

Calculating Efficient Area Aim Proportion

Efficient area aim proportion is essentially the most closely weighted of the Four Factors at 40%.

(The opposite three elements are: offensive rebounding proportion, turnover proportion, and free throw charge.)

To calculate efficient area aim proportion:

  • Assign 1 level for each made two-point basket
  • Assign 1.5 factors for each three-point basket
  • Add the 2 numbers collectively
  • Divide by the entire variety of area targets tried
  • Multiply by 100 to get a proportion

An instance:

Say a participant shoots 5 – 10 in a sport from the sector, together with 3 – 4 from behind the 3-point line.

That will be:

  • 2 two-point baskets (2 factors)
  • 3 three-point baskets (4.5 factors)
  • 6.5 factors whole (2 + 4.5)
  • 6.5/10 = 0.65
  • 0.65 * 100% = 65 eFG%

Area Aim Proportion (FG%) vs. Efficient Area Aim Proportion (eFG%)

Let’s take a look at two totally different gamers taking pictures percentages and attempt to consider their taking pictures.

Each play the (3) and can be thought of the “go-to man” on the offensive finish.

  • Participant A Area Aim Proportion – 45.3%
  • Participant B Area Aim Proportion – 50.4%

By this quantity it ought to be apparent who the higher shooter is…

Placing apart elements like utilization charge, it appears Participant B is the higher offensive participant, proper?

However let’s take a look at their eFG%…

  • Participant A eFG%: 52.6%
  • Participant B eFG%: 52.1%

Participant A is Celtics celebrity Jayson Tatum.

Participant B is the midrange grasp DeMar DeRozan of the Chicago Bulls.

DeMar Derozan makes his dwelling between the paint and three level line. However whereas he’s a wonderful midrange shooter, his shot profile requires him to make these pictures at a really excessive charge to keep up effectivity.

However for Jayson Tatum, not solely is he a stable three-point shooter (shot 35% on his threes), however he takes an enormous variety of them (8.6 threes a sport this season).

Examine that to DeRozan who additionally made 35% of his threes, however took simply two per sport.

Tatum’s pictures carry extra “worth,” permitting him to make up for his decrease area aim proportion as a result of the pictures he makes are price extra.

What’s a Good eFG%?

Most gamers shoot between 40% and 50% from the sector.

For essentially the most half, we settle for something above that as “wonderful” and something under that’s thought of “poor” taking pictures.

Efficient area aim proportion hasn’t obtained the identical remedy, at the same time as groups begin to depend on it extra to judge efficiency.

The statistic isn’t all the time available, though web sites like teamrankings.com are an amazing useful resource for “superior” stats.

For a lot of NBA evaluators, an eFG% of 51% or greater is respectable, whereas something under 50% is subpar.

Julius Randle, for instance, was final amongst NBA qualifiers final 12 months in efficient area aim proportion at 45.9%.

Right here’s the top-25 gamers within the NBA in 2021-2022 in efficient area aim proportion:

effective-field-goal-percentage-players-2022

It’s fascinating that eFG% ought to correctly worth the three level shot, but the vast majority of gamers on this checklist are Facilities and Energy Forwards who make their dwelling within the paint.

However a made shot remains to be essentially the most helpful shot in basketball, no matter whether or not it comes from two or three.

Rim operating monsters like Robert WIlliams III, Rudy Gobert, and Jarret Allen shoot a really excessive proportion as a result of nearly all their pictures are dunks and free throws.

Whereas there are a number of sharp shooters on this checklist like Seth Curry and Malik Monk, a lot of what we view because the league’s greatest shooters like Steph Curry and Kyrie Irving are absent.

Which leads me to…

Weaknesses of eFG%

Understanding among the world’s greatest shooters aren’t highest on the checklist, does that imply efficient area aim proportion is a poor statistic to judge particular person offensive efficiency?

By no means.

Nevertheless it’s necessary to grasp the context of eFG% and implement other statistics to correctly consider gamers.

Nobody would run out an offense of 5 facilities just because they have been top-five in eFG%.

Most of the gamers within the top-25 are complementary gamers which can be set-up by one of the best gamers on their group.

These are often within the type of both lobs on the rim, or within the case of gamers like Dorian Finney-Smith and Seth Curry, vast open threes.

These gamers aren’t requested to complete many possessions and don’t need to create exhausting pictures off the dribble because the shot clock ticks down.

It’s what makes gamers like Nikola Jokic, Giannis, and naturally LeBron so helpful on offense.

They’re excessive utilization gamers that take plenty of tough pictures however can nonetheless convert at a charge similar to the Rudy Goberts of the NBA who’re principally cleansing up offensive rebounds and lobs.

That, although, doesn’t diminish the worth of those Facilities — nevertheless it provides the mandatory context for his or her gaudy numbers.





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