Event: Hillingdon Div 2

Opponent Rating Result
Anthony Braine 1541 0 - 1
Brian E Foster 1686 0 - 1
David Housego 1342 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1256 = (4569 + 400 * (0 - 2)) / 3)

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