Event: Division 4

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Opponent Rating Result
Mark-Anthony Cullen 0 0 - 1
John CH Jones 1128 1 - 0
Puhal Vijayan 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

509 = (1128 + 400 * (2 - 1)) / 3)

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