Assists, passes to missed open shots, passes to shooting fouls, and crucial passes.

Player blocks (or boxes) out an opposing player. This requires contact.

The uninterrupted possession of the ball. A chance is a subset of a box-score “possession” because an offensive rebound, defensive block to shooting team’s possession, or defensive deflection out of bounds create a new chance but not a new possession. The reason that we use chances instead of possessions for our stats is that per-possession stats w [..]

Shot defense that is contested, altered, or blocked.

Shot defense that is pressured, guarded, or open.

Player is in the key when shot is released or has moved into key area when shot is rebounded.