Event: Division 4

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Opponent Rating Result
Eddie Czestochowski 1647 ½ - ½
Raj K Mohindra 1817 0 - 1
John S Marsh 1729 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1598 = (5193 + 400 * (0 - 1)) / 3)

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