Event: Norfolk & Norwich Challengers

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Opponent Rating Result
Brian J Cunningham 1588 0 - 1
David W Moore 1460 ½ - ½
Matthew McLaughlan 1554 1 - 0
Jack Packwood-Clarke 1500 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1426 = (6102 + 400 * (1 - 2)) / 4)

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