Event: Division 2 - Under 6800

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Opponent Rating Result
Freddie Sugden 1671 0 - 1
Catherine Black 1711 0 - 1
Catherine Black 1711 ½ - ½
Brooklyn Stephens 1734 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1407 = (6827 + 400 * (0 - 3)) / 4)

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