Event: Hillingdon Div 2

Opponent Rating Result
John Clenshaw 1735 1 - 0
William Phillips 1845 ½ - ½
Alex Lushpa 1538 ½ - ½
William Phillips 1860 ½ - ½
Ray Jennings 1777 1 - 0
Peter D Walters 1967 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1920 = (10722 + 400 * (2 - 0)) / 6)

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