Event: SCL Div 4

Opponent Rating Result
Kevin G Steele 1787 ½ - ½
Alikhan Menseitov 1704 0 - 1
Tony Cross 1550 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1680 = (5041 + 400 * (1 - 1)) / 3)

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