Event: Division 2

Opponent Rating Result
Leon HJ Fincham 1788 1 - 0
Matthew S Tillett 1955 0 - 1
Tony B Packham 1811 0 - 1
Oliver Finnegan 1859 ½ - ½
Keith S Jones 1762 0 - 1
George Smith 1777 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1759 = (10952 + 400 * (2 - 3)) / 6)

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