Event: Division 2

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Opponent Rating Result
Ron Harrison 1916 0 - 1
Paul J Massey 1709 1 - 0
AM (Tony) McNamara 1770 0 - 1
James Clarke 1783 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1795 = (7178 + 400 * (2 - 2)) / 4)

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