For 2 reasons:
1. This rating for the season is added to the previous one; if a player has no wins this fall, it doesn't mean they never had any.
2. A newcomer starts with an average rating of 1500, which means that with losses, they can get a lower rating. It would be better if a player entered the rating after playing 5-10 games; then the results would be more accurate.
Все в ней нулево и кукольно.