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Event: Major

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Opponent Rating Result
Manmay Chopra 153 ½ - ½
Mervyn J Hughes 172 ½ - ½
Richard A Balatoni 127 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

284 = (452 + 400 * (1 - 0)) / 3)

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