Event: OTB RuleOf6-13Jul-D

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Opponent Rating Result
Laurence Duffy 1540 0 - 1
A Fin O'Regan 1060 0 - 1
Paul Read 1187 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

862 = (3787 + 400 * (0 - 3)) / 3)

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