Simulated heat maps for different soccer positions

Simulated (not from actual data) soccer heat maps for different positions: (A) goalkeeper, (B) central defender, (C) right winger, and (D) striker.  Overlain on a green soccer field background, warmer colors (red/orange) represent areas of more activity or location frequency, while cooler colors (green/cyan/blue) represent areas with low activity or location frequency.  For each heat map, the direction of play is left to right.