Accuracy Gap represents the difference (absolute value) between an expert’s projected points for a player and the actual points scored for the player. For each expert, these values are added up across the players evaluated to generate an overall Accuracy Gap. The closer this value is to zero, the better it is for the expert because it indicates their predictions were closer to each player’s actual point production.
Another way to think of Accuracy Gap is as the expert’s “Error” for their predictions. A perfect gap would be 0, indicating that there was no error between the expert’s predicted rank and the actual rank for a player.