Event: HDCA Summer League Division 1

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Opponent Rating Result
John Thackray 155 ½ - ½
Phil H Crook 106 ½ - ½
Stephen Greep 127 0 - 1
Giles Dunn 120 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-73 = (508 + 400 * (0 - 2)) / 4)

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