Table 1.

Overview of the ball contact types, their definitions and their class affiliation for the three-class problem shot versus pass versus null.

Ball Contact Type	Description	Class
none	no ball contact, player is for example running or sprinting	null
light contact	small contact while player is not moving or during dribbling	null
strong contact	strong ball contact, e.g., bringing the ball forward during dribbling	null
short pass medial	short pass with the medial part of the foot	pass
short pass other	pass with another part of the foot than medial	pass
long pass	pass over longer distance	pass
shot	kick directed towards the goal	shot
unknown	player not visible in video	excluded