Event: Club Championship

Opponent Rating Result
Michael MJ Osborn 1546 1 - 0
Alan Wadsworth 1746 1 - 0
Peter Jones 1200 1 - 0
Paul McMahon 1969 ½ - ½
Paul R Kemp 2023 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1857 = (8484 + 400 * (3 - 1)) / 5)

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