Event: Ilkley Chess Club Championship

Opponent Rating Result
John Link 102 0 - 1
David W Adam 143 0 - 1
R (Bob) Leach 113 1 - 0
Marc Turu 0 0 - 1
Bill Tait 133 1 - 0
Lee Crawford 147 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-27 = (638 + 400 * (2 - 4)) / 6)

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