Event: Hillingdon Div 1

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Opponent	Rating	Result
Andreea-Cristiana Navrotescu	2388	1 - 0
Clive Heidrich	1766	1 - 0

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

2477 = (4154 + 400 * (2 - 0)) / 2)