Event: Worcestershire Championship League

Opponent Rating Result
Jonathan E Swindells 2248 0 - 1
Ed Osbourn 1982 ½ - ½
John P Wrench 1976 ½ - ½
John A Edge 2037 1 - 0
Daniel M Lambourne 2077 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2064 = (10320 + 400 * (1 - 1)) / 5)

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