Event: HDCA Summer League Division 1

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Opponent Rating Result
Michael A Pollard 133 1 - 0
Steve King 134 0 - 1
Colin W Field 94 0 - 1
Daniel W Hill 109 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-83 = (470 + 400 * (1 - 3)) / 4)

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