Event: Division 2

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Opponent Rating Result
Alun Richards 1680 1 - 0
Jeremy Morton 1517 ½ - ½
Kevin N Bendall 1647 0 - 1
Jeremy Morton 1605 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1512 = (6449 + 400 * (1 - 2)) / 4)

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