What is a double double in basketball?

In basketball, a "double-double" refers to a player achieving double-digit figures in two major statistical categories in a single game. While there's no official definition specifying which two categories, it almost always refers to points and rebounds, but could also include points and assists, points and blocks, rebounds and assists, etc. The most common and widely recognized double-double is points and rebounds.

Essentially, if a player scores 10 or more points and grabs 10 or more rebounds in one game, they've achieved a double-double. The more categories a player achieves double digits in, the more impressive the performance (e.g., a triple-double involves three categories). Double-doubles are a good indicator of a player's all-around contribution to the game, showcasing both scoring ability and hustle on the boards (or other areas depending on the categories).