Event: Division One

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Opponent Rating Result
Anthony J Green 1934 0 - 1
Derek Backhouse 1711 1 - 0
Muhammed Mehmood 1556 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1734 = (5201 + 400 * (1 - 1)) / 3)

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