Breaking Down Basketball Analytics: How NBA Teams Measure Player Value

Ever wondered how NBA teams decide which players are worth trading for or signing? It's not just about scoring the most points. Teams use sophisticated statistical methods to figure out which players actually help their teams win games. This article breaks down a fascinating study that redefined how we measure player value in basketball.

The Plus-Minus Problem

In basketball analytics, there's a key concept called plus-minus. Think of it like this: when a player is on the court, does their team score more points than the opponent? If yes, that player has a positive plus-minus. If their team gets outscored while they're playing, they have a negative plus-minus.

But here's the challenge: traditional basketball positions (point guard, shooting guard, small forward, power forward, center) don't tell the whole story anymore. Modern players are more versatile. Some point guards focus on scoring, while others prioritize passing. Some centers can shoot three-pointers, while others stick to the paint.

A New Way to Group Players

This study took a revolutionary approach. Instead of using the traditional five positions, researchers analyzed what players actually do on offense using play type data. They looked at how players use their possessions:

• Pick-and-roll actions (working with a teammate to create scoring opportunities)
• Isolation plays (one-on-one scoring)
• Spot-up shooting (catching and shooting from a set position)
• Post-up plays (backing down defenders near the basket)
• Cutting (moving without the ball to get open)

Using advanced statistical methods, they grouped players into eight new offensive positions and three defensive positions based on what they actually do, not just their listed position.

The Eight New Offensive Positions

Here's what the researchers found:

1. Versatile Scorers

These are your superstars who can score in multiple ways—isolation, pick-and-roll, transition. Think players who can take over games and create their own shots.

2. Pick and Roll Attackers

Players who primarily use pick-and-roll plays to score, but aren't as well-rounded as Versatile Scorers.

3. Skilled Bigs

Big men who can do more than just play in the paint—they can shoot three-pointers and handle the ball.

4. Movement Shooters

The best shooters in the league who score by running off screens and catching passes in motion.

5. Spot-up Shooters

Players who position themselves in corners and wait to catch and shoot—think of role players who specialize in three-pointers.

6. Secondary Attackers

Players who can do a bit of everything but aren't primary options—they're somewhere between Pick and Roll Attackers and Spot-up Shooters.

7. Roll and Cut Bigs

Traditional big men who score by rolling to the basket after setting screens or cutting to open spots.

8. Post-up Bigs

Old-school centers who back down defenders and score close to the basket (this position is becoming rare in today's NBA).

Key Findings That Will Surprise You

Versatile Scorers Are Worth Their Money

The study found that Versatile Scorers consistently provided the highest offensive value. This makes sense—teams pay superstars big money because they can score in multiple ways and carry the offensive load.

The Gap Is Closing

Interestingly, the differences between positions have gotten smaller over time. From 2015-16 to 2021-22, players in different positions became more similar in value, except for Versatile Scorers who remained clearly superior.

Big Men Are Defensive Anchors

On defense, Bigs (centers and power forwards) provided the most value. This confirms what basketball fans know: protecting the paint and rebounding are crucial for team defense.

Guards Show the Most Variation

While Guards had the lowest average defensive value, they showed the most variation—meaning there are some exceptional defensive guards and some really poor ones.

The Evolution of Basketball

The study revealed fascinating trends about how basketball is changing:

• Post-up Bigs are disappearing: Their numbers dropped from 56 players in 2015-16 to just 18 in 2021-22
• Skilled Bigs are rising: Players who can shoot and handle the ball increased from 44 to 65 over the same period
• Spot-up Shooters are multiplying: Their numbers jumped significantly, especially after 2020-21

This reflects the NBA's shift toward three-point shooting and versatile players who can switch between positions.

Why This Matters

This research isn't just academic—it has real-world applications:

For Teams

• Better player evaluation: Teams can more accurately assess whether a player fits their system
• Smarter trades: Understanding positional value helps teams make better personnel decisions
• Strategic planning: Teams can identify which types of players are becoming more or less valuable

For Fans

• Deeper understanding: You can better appreciate why certain players are valuable even if they don't stuff the stat sheet
• Predicting trends: Understanding these patterns helps you see where the game is heading

For Players

• Career development: Players can see which skills are becoming more valuable and develop accordingly
• Contract negotiations: Understanding your positional value in the market

The Technical Innovation

What makes this study special is its hierarchical Bayesian approach. Without getting too deep into the math, this method:

• Accounts for the quality of teammates and opponents
• Provides uncertainty estimates (how confident we can be in the results)
• Handles the complexity of basketball where individual performance depends heavily on context

The researchers also showed that their new position-based ratings predict game outcomes better than traditional methods, proving that this approach captures something important that previous methods missed.

Looking Forward

This research represents a new frontier in basketball analytics. As the game continues to evolve, we'll likely see:

• Even more position flexibility
• New statistical methods to capture player value
• Better integration of player tracking data
• More sophisticated understanding of player roles

Basketball is becoming increasingly complex, and our methods for understanding it need to evolve too. This study shows that the traditional five positions are outdated—modern basketball requires more nuanced ways of categorizing and evaluating players.

For the average fan, this means appreciating that basketball is more than just scoring. The most valuable players are often those who can adapt to multiple roles and situations. The future belongs to versatile players who can switch between different offensive and defensive responsibilities as the game demands.

Whether you're a casual fan or aspiring to work in basketball analytics, understanding these concepts gives you a deeper appreciation for the strategic complexity that makes basketball such a fascinating sport to watch and analyze.

This breakdown is based on research published in the Journal of Sports Analytics, representing cutting-edge work in basketball statistics and player evaluation methods.