Event: D&DCL Cup QP

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Opponent Rating Result
David J Pickering 1830 ½ - ½
Alan F Downham 1854 1 - 0
John C Tompson 2186 ½ - ½
John Potter 2018 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2072 = (7888 + 400 * (1 - 0)) / 4)

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