Event: Uxbridge - Watford (rapidplay)

Opponent Rating Result
Gautam Sriram 1397 ½ - ½
Gautam Sriram 1401 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1599 = (2798 + 400 * (1 - 0)) / 2)

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