Event: Division 4

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Opponent Rating Result
Steven Wilde 1426 ½ - ½
Emma Salazar Eyre 1559 0 - 1
David Pritchard 1538 ½ - ½
Ray Garside 1526 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1412 = (6049 + 400 * (0 - 1)) / 4)

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