Event: Library Rapidplay June

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Opponent Rating Result
Ajay Selvan 1294 0 - 1
Senon Weerakkody 919 1 - 0
George Butterworth 1104 0 - 1
Charles Hind 1118 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1109 = (4435 + 400 * (2 - 2)) / 4)

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