Event: Derby & District Division 3

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Opponent Rating Result
Ian R Morrell 1196 1 - 0
Terry Knight 1297 0 - 1
Kirill Prokofjevs 677 0 - 1
Tony O'Donovan 1333 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1126 = (4503 + 400 * (2 - 2)) / 4)

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