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Event: WMA Spring League Division 1

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Opponent Rating Result
Eric Gibbon 1922 0 - 1
Michael Horne 1572 1 - 0
Eric Gibbon 1922 ½ - ½
Michael Horne 1572 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1847 = (6988 + 400 * (2 - 1)) / 4)

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