Event: Open Knockout

Opponent Rating Result
Simon Layhe 1923 ½ - ½
Julian N Hawthorne 1680 1 - 0
Neville Layhe 1660 ½ - ½
Karl Lockett 1806 1 - 0
Carmel J Barwick 1848 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1863 = (8917 + 400 * (2 - 1)) / 5)

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