Event: Club Championship

Opponent Rating Result
Ian Carrigan 122 0 - 1
Alan Riddle 78 1 - 0
A Carrigan 94 0 - 1
Michael Carrigan 69 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

91 = (363 + 400 * (2 - 2)) / 4)

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