Event: Open County Championship

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Opponent Rating Result
Timothy Lunn 2028 1 - 0
Julian Hudson 0 0 - 1
Ken B McEwan 2125 ½ - ½
Simon Wilks 1926 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1520 = (6079 + 400 * (1 - 1)) / 4)

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