Event: Summer Rapidplay

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Opponent Rating Result
J Alan Stockley 1388 0 - 1
Rhys Orton 1229 0 - 1
Richard Stevenson 1201 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

873 = (3818 + 400 * (0 - 3)) / 3)

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