The four factors of basketball explained
The four factors in one sentence, what each one measures, why they are ranked in order of importance, and how they explain why a team wins or loses.
The idea in one sentence
The four factors are the four things that decide basketball games: shooting, turnovers, rebounding and free throws. The idea, developed by the analyst Dean Oliver, is that almost everything that determines a result can be grouped under these four headings. Measure how a team performs on each, at both ends of the floor, and you have a compact framework for understanding why it wins and where it needs to improve.
Shooting comes first
The most important factor by far is shooting, measured by effective field goal percentage, which credits three-pointers for the extra point they are worth. How well a team shoots, and how well it stops opponents from shooting, decides more games than anything else. This is why so much of modern strategy revolves around generating and preventing good, efficient shots, particularly at the rim and from beyond the arc, where the value per attempt is highest.
Turnovers, rebounds and free throws
After shooting come the other three. Turnovers, measured as a rate per possession, cost a team the chance to shoot at all, so protecting the ball and forcing mistakes matter greatly. Rebounding, expressed as the share of available rebounds a team grabs, decides who gets extra possessions. Free throws, measured by how often a team gets to the line relative to its shots, add cheap, efficient points. Each carries less weight than shooting, but all four add up.
Why the order matters
The factors are deliberately ranked, because they do not matter equally. Shooting carries the most weight, followed by turnovers, then rebounding, then free throws. Knowing the order helps you diagnose a game correctly: a team can dominate the glass and still lose if it shoots poorly, while an efficient shooting night usually outweighs a rebounding deficit. The framework keeps analysis focused on what actually swings results rather than on eye-catching but lesser numbers.
Where you will see it
The four factors appear constantly in team analysis, both to review a single game and to profile a team across a season. Because each factor has an offensive and a defensive side, they neatly explain the story behind a team's overall efficiency: a strong offence built on shooting, a defence that forces turnovers, and so on. For anyone trying to understand why one side beat another, the four factors are among the most useful starting points there is.