Event: Division Two

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Opponent Rating Result
Shane Cooksey 1541 ½ - ½
Terry W Walker 1758 0 - 1
Robert Marks 1776 ½ - ½
David J Friend 1596 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1568 = (6671 + 400 * (0 - 1)) / 4)

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