Event: Division 3

Opponent Rating Result
Paul Chantrell 146 ½ - ½
Xavier Cowan 1929 1 - 0
Andrew Medworth 1766 1 - 0
Richard Jerram 1749 ½ - ½
David Amior 160 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1310 = (5750 + 400 * (2 - 0)) / 5)

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