Event: u1850 County Championship

Opponent Rating Result
Stephen Livermore 1659 1 - 0
Robert L Jones 1679 1 - 0
Stephen C Pride 1608 ½ - ½
John R Wickham 1707 ½ - ½
Simon Riley 1749 1 - 0
Matthew Cooper 1746 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1958 = (10148 + 400 * (4 - 0)) / 6)

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