Event: Division 3

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Opponent Rating Result
Jaime Ashworth 83 1 - 0
Martin Kolbuszewski 94 0 - 1
Jim A Caterer 113 0 - 1
John CH Jones 56 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

87 = (346 + 400 * (2 - 2)) / 4)

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