Event: Division 3

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Opponent Rating Result
Ian Nicholson 1581 0 - 1
Matt O'Keeffe 1665 0 - 1
Haroon Malik 1530 0 - 1
Philip Huxford 1555 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1283 = (6331 + 400 * (0 - 3)) / 4)

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