Event: NSDCA Division 4

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Opponent Rating Result
Peter Hiscock 1213 0 - 1
Malcolm Green 1250 0 - 1
Timothy Weston 1328 0 - 1
Andrew Miller 1100 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

823 = (4891 + 400 * (0 - 4)) / 4)

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