Event: Norman Ellis

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Opponent Rating Result
Peter Braham 148 0 - 1
Frank T Sheldrick 143 0 - 1
Richard Hersey 132 0 - 1
Andy Ross 138 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-160 = (561 + 400 * (0 - 3)) / 4)

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