Event: Division A

Opponent Rating Result
Zaki Harari 2081 ½ - ½
Partha Mulay 2065 0 - 1
James M Robinson 1860 0 - 1
Brian J Spear 1797 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1851 = (7803 + 400 * (1 - 2)) / 4)

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