Event: Summer Rapidplay

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Opponent Rating Result
Malcolm Goldspink 1254 0 - 1
Sachin Saggar 0 0 - 1
Michael J Creaney 1652 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

569 = (2906 + 400 * (0 - 3)) / 3)

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