Event: Division 4

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Opponent Rating Result
Dave R Wingrove 1397 0 - 1
Ronald C Andriessen 1478 0 - 1
Conor Davis 1344 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1006 = (4219 + 400 * (0 - 3)) / 3)

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