Event: Division 2

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Opponent Rating Result
Michael Hayward 1647 0 - 1
Mark D Brougham 1851 0 - 1
Paul Edwards 1753 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1484 = (5251 + 400 * (0 - 2)) / 3)

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