Event: BCL Division 1

Opponent Rating Result
Sean Gallagher 1604 0 - 1
Brian J Valentine 1872 ½ - ½
Robert Whiteside 1906 0 - 1
Paul F Habershon 1957 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1535 = (7339 + 400 * (0 - 3)) / 4)

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