Event: NSDCA Division 4

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Opponent Rating Result
Ian Mullin 1236 1 - 0
Martin J Chadwick 1271 1 - 0
Andrew Miller 1100 1 - 0
Peter Hiscock 1213 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1405 = (4820 + 400 * (3 - 1)) / 4)

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