Event: Division 4

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Opponent Rating Result
Jake Stones 1808 ½ - ½
Mei-En Emmanuelle Hng 2110 0 - 1
James J McDonnell 1905 1 - 0
Richard A Balatoni 1685 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1977 = (7508 + 400 * (2 - 1)) / 4)

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