Event: Division 3 - Under 6400

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Opponent Rating Result
Piotr Ruszelak 1784 0 - 1
Brooklyn Stephens 1669 ½ - ½
Robert G Wilby 1624 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1692 = (5077 + 400 * (1 - 1)) / 3)

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