Event: Division 3

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Opponent Rating Result
Ian Goodyer 116 1 - 0
Robert Smart 85 1 - 0
Roland Rattray 128 1 - 0
Ian Dennis 137 1 - 0
Andrew Caswill 97 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

513 = (563 + 400 * (5 - 0)) / 5)

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