Event: Division 2

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Opponent Rating Result
Daniel Langhamer 1865 0 - 1
Christopher Taylor 1561 ½ - ½
Nigel Yates 1393 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1606 = (4819 + 400 * (1 - 1)) / 3)

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