Event: Division Two

Opponent Rating Result
D Ian Calvert 2003 ½ - ½
John W Bass 1964 1 - 0
Tony D Wells 2028 0 - 1
Chris J Todd 1914 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1877 = (7909 + 400 * (1 - 2)) / 4)

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