Event: Division 4

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Opponent Rating Result
John R Huthwaite 1744 1 - 0
Jim Wellington 1511 ½ - ½
Amanthika Anbalagan 1433 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1563 = (4688 + 400 * (1 - 1)) / 3)

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