Event: Open County Championship

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Opponent Rating Result
Colin J Solloway 1656 1 - 0
John G Daugman 1856 1 - 0
Mervyn J Hughes 1938 1 - 0
Adrian MS Matthews 1830 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2220 = (7280 + 400 * (4 - 0)) / 4)

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