Event: Division 2 Rapidplay Cup

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Opponent Rating Result
James Irwin 1682 0 - 1
James Irwin 1682 0 - 1
John A Feavyour 1978 0 - 1
John A Feavyour 1978 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1630 = (7320 + 400 * (1 - 3)) / 4)

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