Event: Division Two

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Opponent Rating Result
Scott Russell 1773 0 - 1
Nathanael Kasafir 1833 1 - 0
Steve Alcock 1510 0 - 1
Geoffrey C Wesson 1668 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1696 = (6784 + 400 * (2 - 2)) / 4)

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