Event: NSDCA Division 1

Opponent Rating Result
Andrew L Raeburn 1861 0 - 1
Philip N Birks 1725 ½ - ½
John P Ewens 1933 1 - 0
Karl Lockett 1806 0 - 1
Anthony RW Brough 1754 ½ - ½
Malcolm A Roberts 1671 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1792 = (10750 + 400 * (2 - 2)) / 6)

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