Event: Division 4

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Opponent Rating Result
Robert Heyman 1573 0 - 1
Kai Harkensee 1300 0 - 1
Alex Johnson 1479 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1184 = (4352 + 400 * (0 - 2)) / 3)

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