Event: Deric Cox Trophy

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Opponent Rating Result
James R Barber 1308 0 - 1
H Martin Dale 1249 1 - 0
Stephen Roberts 1060 0 - 1
David Wickes 1100 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

979 = (4717 + 400 * (1 - 3)) / 4)

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