Event: Mini League

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Opponent Rating Result
Clive W Davies 161 0 - 1
Bill Tait 133 ½ - ½
Paul RH Clarke 151 0 - 1
Stephen Forbes 118 1 - 0
Neil Griffiths 129 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-22 = (692 + 400 * (1 - 3)) / 5)

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