Event: A Division

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Opponent Rating Result
Gediminas Sarakauskas 2433 0 - 1
Robert McLean 2101 ½ - ½
Plamen Mladenov 2434 0 - 1
Allan W Beardsworth 2214 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2096 = (9182 + 400 * (0 - 2)) / 4)

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