Event: Internal Rapidplay January

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Opponent Rating Result
J Alan Stockley 1400 0 - 1
Bhima Patil 1320 0 - 1
Richard Stevenson 1079 0 - 1
Tristan Green 1381 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

895 = (5180 + 400 * (0 - 4)) / 4)

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