Talk:Elo rating system/@comment-188.183.207.140-20110719223123/@comment-189.168.163.195-20110729171807

Because he lost games he was supposed to win, and won games he was supposed to win, and lost when he was supposed to lose. Check formula, it's actually very clear: Elo= Old Elo + K (A-B)             and when he won, A was 1, but B was high (high chance to win), so 1-big = no greta change, so he didnt get a lot of Elo winning 300 times, but maybe lost a lot of Elo with 300 losses if he was supposed to win, with A=0 and B high = loss lot of Elo 0-Big = Big negative