Event: U1800 Cup

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Opponent Rating Result
Graeme Jones 1677 0 - 1
Les J Jones 1744 1 - 0
Les J Jones 1734 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1852 = (5155 + 400 * (2 - 1)) / 3)

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