Event: Division 1

Opponent Rating Result
Fred Collins 1686 0 - 1
Robert T Killeen 1894 0 - 1
Olga L Latypova 1959 ½ - ½
Steve Higgins 1754 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1623 = (7293 + 400 * (0 - 2)) / 4)

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