Event: Hillingdon Div 1

Opponent Rating Result
Colin Hughes 1820 1 - 0
Mark Winterbotham 1880 ½ - ½
John Tobisch 1916 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2005 = (5616 + 400 * (1 - 0)) / 3)

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