Event: HDCA Summer League Section 2

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Opponent	Rating	Result
John Thackray	155	½ - ½
Ahmet BH Hoscan	149	0 - 1
Stephen Brown	118	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

141 = (422 + 400 * (1 - 1)) / 3)