Event: Division 3

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Opponent Rating Result
Keith Milner 1150 1 - 0
Dan Wood 1150 0 - 1
Robert Hurst 1150 0 - 1
Simon A Jones 1392 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1111 = (4842 + 400 * (1 - 2)) / 4)

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