Event: Arjay Plate

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Opponent Rating Result
Richard Finney 1585 ½ - ½
Mike Berry 1520 1 - 0
Tom Devlin 1544 1 - 0
Hugh Thornton 1568 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1854 = (6217 + 400 * (3 - 0)) / 4)

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