Event: Gordon Nobbs League

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Opponent Rating Result
Anthony Tatam 1528 0 - 1
Anthony Tatam 1528 0 - 1
Graham A Mill-Wilson 1494 0 - 1
Graham A Mill-Wilson 1494 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1111 = (6044 + 400 * (0 - 4)) / 4)

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