Event: Division Two

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Opponent Rating Result
Roy A Lawrence 1811 1 - 0
Mike J Groombridge 1640 1 - 0
Alex D Pready 1778 1 - 0
David Wilkinson 1400 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2057 = (6629 + 400 * (4 - 0)) / 4)

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