Event: Major

Opponent Rating Result
Farhad Taghiyev 462 0 - 1
David Battiscombe 1300 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

881 = (1762 + 400 * (1 - 1)) / 2)

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Opponent Rating Result
David Steiert 1516 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1516 = (1516 + 400 * (0 - 0)) / 1)