Ball Pitchzone

A continuous span describing which longitudinal third of the pitch the ball is currently in. Carries a pitchzone enum: defensive_third, middle_third, attacking_third.

Category: Structure

Properties

Property	Type	Description	Values
pitchzone	str	Pitch-third span label on ball_pitchzone events.	defensive_third, middle_third, attacking_third

Property Values

pitchzone

A continuous span describing which longitudinal third of the pitch the ball is currently in. Carries a pitchzone enum: defensive_third, middle_third, attacking_third.

Value	Description
defensive_third	Ball is in the longitudinal third closest to the in-possession team's own goal.
middle_third	Ball is in the central longitudinal third.
attacking_third	Ball is in the longitudinal third closest to the opposition goal.

Accuracy

Held-out model quality — how well the engine reproduces ground truth on frozen evaluation games it was never trained on. This is not per-match confidence (each event row also carries its own confidence_event). Metric: frame_macro_f1 (per-frame, macro-averaged over classes), measured 2026-07-10.

Ground-truth source	Accuracy	Macro F1	Frames
World Cup Broadcast	0.85	0.83	304,848

Response

Events of this type appear in the Events endpoint response:

{
  "start": 125.5,
  "end": 135.5,
  "label": "ball_pitchzone",
  "event_type": "ball_pitchzone"
}