Event: u1850 County Championship

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Opponent Rating Result
Paul Walton 1810 0 - 1
Cameron Funnell 1789 0 - 1
Peter Barkas 1805 1 - 0
Nathan Barnes 1829 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1808 = (7233 + 400 * (2 - 2)) / 4)

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