Event: Northamptonshire Silver King League

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Opponent Rating Result
Nicholas J Caldwell 1765 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1365 = (1765 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Martin Crichton 1953 0 - 1
George Gowers 1466 1 - 0
Ron Cooper 1518 1 - 0
Nicholas J Caldwell 1765 0 - 1
David P Curran 1716 1 - 0
Arrow Morris 0 1 - 0
Luis Alejandro Vieira 0 1 - 0
Robert Gibbison 1560 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1397 = (9978 + 400 * (5 - 2)) / 8)