Event: u1850 County Championship

Opponent Rating Result
Alan Watkins 1830 0 - 1
Trevor J Ansell 1845 1 - 0
Sean Burton 1823 0 - 1
Alan Watkins 1830 ½ - ½
Samuel Gaffney 1835 0 - 1
Paul Walton 1810 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1629 = (10973 + 400 * (1 - 4)) / 6)

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