What is a double-double? The stat, and how it differs from a triple-double
The definition of a double-double, the five categories that qualify, the most common combinations, how it scales up to triple and quadruple-doubles, and what it really tells you.
The definition
A double-double is a game in which a player reaches double figures — ten or more — in two of the five main statistical categories. Twelve points and eleven rebounds is a double-double; so is fourteen points and ten assists. The word simply names the achievement of two double-digit totals in one night, and it is one of basketball's most familiar shorthand marks of a well-rounded performance.
The five categories
The qualifying categories are points, rebounds, assists, steals and blocks. Any two of them reaching double digits does the job. In practice points and rebounds, or points and assists, are by far the most common pairings, because scoring is frequent and most double-double machines are either big men who rebound or guards who set up teammates. Ten steals or ten blocks are rare enough to be near-historic events.
The most common combinations
A centre with twenty points and twelve rebounds is the classic double-double — the everyday output of a dominant big. A point guard with eighteen points and ten assists is the guard version. These are the workhorses of the stat: night after night, they hit two categories without it being remarkable, which is exactly why consistently recording double-doubles is a sign of a reliable, high-impact starter.
How it scales up
Reach double figures in three categories and it becomes a triple-double — far rarer and a hallmark of all-around greatness. Four categories is a quadruple-double, achieved only a handful of times in NBA history. The pattern is the same idea stacked higher: each extra double-digit category is dramatically harder, which is why a triple-double still makes headlines and a quadruple-double is the stuff of legend.
What it really tells you
A double-double signals a two-way, complete stat line rather than a one-dimensional scoring night — a player affecting the game in more than one way. But like any counting stat it rewards volume and opportunity, and it does not measure efficiency or defence beyond the boxscore. Read it as a useful marker of well-rounded impact, then check the shooting numbers to see how efficiently that impact came.