Event: HDCA Summer League Section 1

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Opponent	Rating	Result
J Gerry Johnstone	128	0 - 1
Paul Hambly	98	½ - ½
N Charles Clayton	99	½ - ½

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

-25 = (325 + 400 * (0 - 1)) / 3)