Event: Summer Open Division

Opponent Rating Result
Tim A Lane 151 0 - 1
Ann-Marie James 184 0 - 1
Larry Wright 150 1 - 0
Tim A Lane 151 0 - 1
Ann-Marie James 184 0 - 1
Larry Wright 150 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-38 = (970 + 400 * (1 - 4)) / 6)

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