Tak to jest w weleague:QUOTE
Rn = Ro + K × (W - We)
Rn is the new rating, Ro is the old (pre-match) rating.
K is the weight constant = 30
K is then adjusted for the goal difference in the game. It is increased by half if a game is won by two goals, by 3/4 if a game is won by three goals, and by 3/4 + (N-3)/8 if thegame is won by four or more goals, where N is the goal difference.
W is the result of the game (1 for a win, 0.5 for a draw, and 0 for a loss).
We is the expected result (win expectancy), either from the chart or the following formula:
We = 1 / (10(-dr/400) + 1)
dr equals the difference in ratings.
Nie wiem jak ten problem rozwiązał siano z Arosem, ale będzie to chyba coś podobnego