Event: Division 2

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Opponent Rating Result
Richard Betts 1804 0 - 1
Steven Scullion 1418 1 - 0
Sumedh Gajbhiye 1738 0 - 1
Alan Jackson 1612 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1443 = (6572 + 400 * (1 - 3)) / 4)

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