Event: Division 4

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Opponent Rating Result
Joshua Pimm 0 1 - 0
Rob Jarvis 0 0 - 1
Ronald Watson 1398 ½ - ½
Imran Chaudhry 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

450 = (1398 + 400 * (2 - 1)) / 4)

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