Event: Summer League (Knockout Stage)

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Opponent Rating Result
Peter Nelson 1620 0 - 1
Peter Nelson 1620 0 - 1
Thomas Brown 1688 0 - 1
Thomas Brown 1688 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1354 = (6616 + 400 * (0 - 3)) / 4)

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