Event: Division 2

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Opponent Rating Result
Ian D Hunnable 1927 0 - 1
Howard Grist 1943 0 - 1
Colin R Ramage 1931 ½ - ½
Finbar McLoughlin 1850 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1613 = (7651 + 400 * (0 - 3)) / 4)

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