Event: Division 3

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Opponent Rating Result
Martin Kolbuszewski 94 0 - 1
Eamonn G Howard 87 0 - 1
Vince Southcott 99 1 - 0
Toby Martin 85 0 - 1
John Parfitt 61 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

5 = (426 + 400 * (2 - 3)) / 5)

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