Event: 24th October - Internal Rapidplay

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Opponent Rating Result
Paul Winstanley 0 1 - 0
Andy Elmer 1601 0 - 1
Jude England 1230 0 - 1
Jonathan Culshaw 1462 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

873 = (4293 + 400 * (1 - 3)) / 4)

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