Event: Division 2

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Opponent Rating Result
Aidan T Corish 1776 1 - 0
Colin R Ramage 1900 0 - 1
Philip Staniland 1855 0 - 1
Aidan T Corish 1776 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1727 = (7307 + 400 * (1 - 2)) / 4)

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