Event: Hillingdon Div 1

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Opponent Rating Result
Clive Heidrich 1764 ½ - ½
Greg J Breed 1927 1 - 0
Mark Winterbotham 1883 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2125 = (5574 + 400 * (2 - 0)) / 3)

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