Event: Division 4

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Opponent Rating Result
Chris Aldridge 1321 0 - 1
Geoffry G Blissitt 1180 1 - 0
Nigel Foster 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

700 = (2501 + 400 * (1 - 2)) / 3)

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