Debater: The average points scored per game by a player on the starting roster of the New York Boomerangs is 12 points. Most players of the New York Boomerangs are on the starting roster. Furthermore, the average points scored per game by any player on the team generally does not fluctuate much from game to game. Therefore, each game, most players of the New York Boomerangs almost certainly score at least a few points.
The debater's argument is most vulnerable to criticism on which of these grounds?