Event: Uxbridge - Watford (rapidplay)

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Opponent	Rating	Result
Pranav Mangalagiri	1179	½ - ½
Pranav Mangalagiri	1178	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1179 = (2357 + 400 * (0 - 0)) / 2)