Event: Division 3

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Opponent Rating Result
Mike Herbert 1719 1 - 0
Trevor FW Lewis 1512 ½ - ½
Brian M Hayward 1698 1 - 0
Amanthika Anbalagan 1505 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1809 = (6434 + 400 * (2 - 0)) / 4)

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