Event: Ivan Gromov Online Schools Chess League

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Opponent Rating Result
Alex Volkovoy 0 ½ - ½
Roland Bourne 0 0 - 1
Kai O'Neill 1352 0(def) - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-200 = (0 + 400 * (0 - 1)) / 2)

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Opponent Rating Result
Mark Yanni 1312 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

912 = (1312 + 400 * (0 - 1)) / 1)