Event: Open

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Opponent Rating Result
Jack Pilley 2106 0 - 1
Lewis A Turner 2111 0 - 1
Graham J Sharpe 1996 ½ - ½
Graham J Sharpe 1996 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1852 = (8209 + 400 * (0 - 2)) / 4)

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