Event: NCCA League Division 1

Opponent Rating Result
Mervyn J Hughes 1857 0 - 1
John E Dolamore 1746 ½ - ½
Andrew D Hartland 1840 0 - 1
Ken Farquhar 1529 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1643 = (6972 + 400 * (1 - 2)) / 4)

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