Event: HDCA Summer League Division 1

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Opponent Rating Result
Phil Bawden 162 1 - 0
Mark I Collinson 177 0 - 1
Tim M Turner 162 ½ - ½
Stephen Crow 150 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

263 = (651 + 400 * (2 - 1)) / 4)

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