Event: Club Championship

Opponent Rating Result
Alan Wadsworth 1756 0 - 1
Peter Jones 1200 ½ - ½
Rob Davies 1371 1 - 0
Charles J Richmond 1592 0 - 1
Michael MJ Osborn 1553 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1414 = (7472 + 400 * (1 - 2)) / 5)

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