Event: Championship 2022

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Opponent Rating Result
Darren McCarthy 1599 1 - 0
Jonathan Mahony 1626 0 - 1
Ben Strutt 1856 0 - 1
James P Collier 1729 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1603 = (6810 + 400 * (1 - 2)) / 4)

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