Event: Division 2

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Opponent Rating Result
Arran K Gundry 1856 0 - 1
Paul ER Badger 1854 0 - 1
Christopher Badley 1443 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1584 = (5153 + 400 * (1 - 2)) / 3)

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