Event: NSDCA Division 2

Opponent Rating Result
Jon EW Blackburn 1628 ½ - ½
Ebube Christian 1586 0 - 1
Anthony RW Brough 1776 0 - 1
Ebube Christian 1586 0 - 1
David J Barker 1459 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1447 = (8035 + 400 * (1 - 3)) / 5)

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