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Event: Online League Division 2 (Winter 2021)

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Opponent Rating Result
Derek P McGovern 1839 ½ - ½
Raghu Kamath 1900 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1670 = (3739 + 400 * (0 - 1)) / 2)

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