Event: 4-board Division 3

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Opponent Rating Result
William Bond 972 0 - 1
Edward Staples 1300 ½ - ½
Paddy McLeary 1200 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1157 = (3472 + 400 * (1 - 1)) / 3)

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