Event: Derby & District Cup QP

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Opponent Rating Result
D Martin Howard 0 0 - 1
Andrew Toothill 0 ½ - ½
Martin Cobham 0 ½ - ½
Owen Dale 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-100 = (0 + 400 * (0 - 1)) / 4)

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