Event: Northamptonshire Silver King League

Opponent Rating Result
Christopher Keech 1803 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1403 = (1803 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Vanik Singh 1398 0 - 1
Vanik Singh 1398 0 - 1
Joshua Morris 0 0 - 1
Robert Ellam 1383 1 - 0
Rene Butler 1289 ½ - ½
Alistair Mair 0 1 - 0
Tim Broad 1555 ½ - ½
John Edmundson 1240 1 - 0
David Slinger 1755 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1158 = (10018 + 400 * (4 - 3)) / 9)