Event: S&D Knockout Championship

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Opponent Rating Result
Glyn G Williams 121 1 - 0
Joanne Hutchinson 137 ½ - ½
Joanne Hutchinson 137 ½ - ½
Joanne Hutchinson 137 0 - 1
Joanne Hutchinson 137 1 - 0
Joanne Hutchinson 137 1 - 0
Joanne Hutchinson 137 ½ - ½
Jason Dew 132 1 - 0
Denis Georgiou 164 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

315 = (1239 + 400 * (5 - 1)) / 9)

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