Event: Division 4

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Opponent Rating Result
Ben Finn 1553 0 - 1
Doug M Bonn 1537 0 - 1
Iain Hunt 1481 0 - 1
Viktoria Jakcsiova 1481 0 - 1
Ruy D'Orey 1688 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1308 = (7740 + 400 * (1 - 4)) / 5)

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