When a player reaches double figures (10 or more) in two of the five main statistical categories – points, rebounds, assists, steals and blocks – they have achieved a double-double.
The most common double-doubles combinations are points and rebounds for big men and points and assists for guards. Reaching double figures in steals or blocks is extremely rare.
When a player reaches double figures in three of the five categories, they have achieved a triple-double. Nearly all triple-doubles consists of points, rebounds and assists.