Event: North Norfolk Championship (85|10)

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Opponent Rating Result
Richie Allen 1414 1 - 0
Michael J Gibbons 1868 0 - 1
Chris Perkins 1761 0 - 1
David P Jones 1361 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1601 = (6404 + 400 * (2 - 2)) / 4)

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