Event: Division 3

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Opponent Rating Result
Ian D Jenkins 1297 0 - 1
Ian D Jenkins 1299 0 - 1
Zandi Gillespie 0 1 - 0
Eamonn G Howard 1328 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

781 = (3924 + 400 * (1 - 3)) / 4)

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