Event: Division Four

Opponent Rating Result
Ray Bettam 1551 1 - 0
Paul Silverman 1665 ½ - ½
Nicolas Fernandez Santos 1812 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1809 = (5028 + 400 * (1 - 0)) / 3)

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