Event: Internal Rapidplay February

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Opponent Rating Result
J Alan Stockley 1380 0 - 1
Tim Hind 1302 1 - 0
Malcolm Goldspink 1243 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1175 = (3925 + 400 * (1 - 2)) / 3)

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