Event: Hillingdon Div 1

Opponent Rating Result
Anthony R Fulton 2040 ½ - ½
Steven F Coles 2033 1 - 0
Mark Winterbotham 1867 ½ - ½
Andrew Harley 2139 0 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2113 = (5940 + 400 * (1 - 0)) / 3)

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