Event: Watford - St Albans (rapidplay)

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Opponent Rating Result
Aashna Patel 1189 ½ - ½
Aashna Patel 1189 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1389 = (2378 + 400 * (1 - 0)) / 2)

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