Event: Division 2

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Opponent Rating Result
Sumedh Gajbhiye 1749 0 - 1
Steve Thomas 1790 ½ - ½
Ingmar So 1468 0 - 1
Joe Ledgerton 1556 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1341 = (6563 + 400 * (0 - 3)) / 4)

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