Event: A Division

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Opponent Rating Result
Amy Lovatt 1788 1 - 0
Julian A Alderton 1600 1 - 0
Anthony Prime 1605 1 - 0
Paul Doherty 1759 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2088 = (6752 + 400 * (4 - 0)) / 4)

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