Event: D&DCL Cup QP

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Opponent Rating Result
David Williams 2015 0 - 1
Derek A Jarvis 2036 ½ - ½
Martin Cobham 1823 0 - 1
John Moughtin-Leay 1521 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1549 = (7395 + 400 * (0 - 3)) / 4)

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