Event: SCL Div 1

Opponent Rating Result
James I Chilton 1830 1 - 0
Daniel Goodlad 1776 0 - 1
Keith DF Gregory 2014 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1873 = (5620 + 400 * (1 - 1)) / 3)

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