Event: Division 4

Opponent Rating Result
Richard A Balatoni 1678 ½ - ½
Cem Oyvat 1770 1 - 0
Paul Chantrell 1749 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1732 = (5197 + 400 * (1 - 1)) / 3)

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