Event: NSDCA Division 1

Opponent Rating Result
Chris Simpson 1563 1 - 0
Andrew L Raeburn 1861 0 - 1
Karl Lockett 1806 1 - 0
Sandra G Blackburn 1611 1 - 0
Jon EW Blackburn 1661 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1860 = (8502 + 400 * (3 - 1)) / 5)

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