Event: NSDCA Division 4

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Opponent Rating Result
Zak Frederick Fenton 1200 0 - 1
Malcolm Green 1250 0 - 1
Ian Mullin 1236 0 - 1
Robert Perry 1203 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1022 = (4889 + 400 * (1 - 3)) / 4)

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