Event: Winter Online

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Opponent Rating Result
Ivan Elisseev-Siuda 1015 0 - 1
Ivan Elisseev-Siuda 1015 1 - 0
Donna Chadwick 935 0 - 1
Donna Chadwick 935 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

775 = (3900 + 400 * (1 - 3)) / 4)

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