Why sometime I get -9 and +7 in chess .com

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Avatar of BToZero

hey everyone I need someone who can clear my confusion about rattings I recently played some game and if I win I get +7 and If I lose I get -9 why is that. can anyone explain this.

Avatar of RonWeasleyMyGoat

Your rating was higher than theirs

Avatar of MrChatty

Higher difference between ratings of players brings higher difference between points they can win/lose