Event: Division 2

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Opponent Rating Result
Robert Tinton 1585 ½ - ½
Bahattin Tastan 1399 0 - 1
Geoff Key 1112 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1365 = (4096 + 400 * (1 - 1)) / 3)

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