Event: NSDCA Division 1

Opponent Rating Result
Jon EW Blackburn 1698 1 - 0
Michael A Lee 1711 ½ - ½
Harry Gardiner 1876 0 - 1
Joseph P Alcock 1541 0 - 1
Sandra G Blackburn 1562 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1518 = (8388 + 400 * (1 - 3)) / 5)

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