Recommended reporting categories and definitions of player actions at the time of a sudden-onset injury
| Player action | Definition |
| Running | Running at any speed (acceleration/steady speed/deceleration), including linear, curved or other types of runs with or without the ball |
| Change of direction | A specific moment in a run with a sharp deviation (any angle) from the line of running with and without the ball |
| Kicking | Any type of kick, including shooting/passing/crossing/set pieces/penalty |
| Heading | Heading or attempting to head the ball (in a duel or alone) |
| Tackle | Injured player being tackled or is tackling an opponent with any body part |
| Landing | Landing on one or both feet after a jump |
| Falling | When a player is falling or diving—for example, loses balance/stability and ends up on the ground with any part of the body other than the feet |
| Controlling the ball | When a player attempts to control the ball—for example, while receiving the ball, reaching for the ball or sliding for the ball (not a sliding tackle) |
| Hit by ball | Any hit by the ball including a block, deflection or other accidental hits |
| Collision | Players unintentionally running/jumping into each other, the goal post or any other object on/around the pitch |
| Other player action | For example, a throw-in, setting off in a jump, or specific goalkeeper actions not included in the other categories |
| Unknown | The action of the player at the time of injury is unknown: either not witnessed by others, or the player is unable to recollect |