Event: Division One

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Opponent Rating Result
Kevin Hurney 2061 0 - 1
Marek J Soszynski 1824 0 - 1
Dave M Davies 1720 1 - 0
Scott Russell 1748 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1838 = (7353 + 400 * (2 - 2)) / 4)

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