Event: 4-Board Division 1

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Opponent Rating Result
Edward S Oxley 1755 0 - 1
John Thackray 1921 0 - 1
Derek A Sheppard 1720 ½ - ½
Giles Dunn 1665 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1465 = (7061 + 400 * (0 - 3)) / 4)

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