Event: NSDCA Division 3

Opponent Rating Result
Mohammed Farah 1230 0 - 1
Peter Hiscock 1185 1 - 0
Robert Perry 1108 0 - 1
Christopher Marais 1250 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

993 = (4773 + 400 * (1 - 3)) / 4)

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