Event: Division 4

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Opponent Rating Result
Paul D Yerbury 1840 ½ - ½
Ronan Kelly 1590 ½ - ½
David Lambert 1598 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1676 = (5028 + 400 * (0 - 0)) / 3)

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