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Event: U1825 Group A

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Opponent Rating Result
Joshua Tang 152 1 - 0
Biran S Shah 130 ½ - ½
Alex Robinson 107 1 - 0
Peter G Sherlock 152 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

335 = (541 + 400 * (2 - 0)) / 4)

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