Event: Open

Opponent Rating Result
Ann-Marie James 176 0 - 1
Philip Purcell 163 0 - 1
Neil J Owen 184 ½ - ½
James L Hanley 0 0 - 1
Dave M Davies 150 1 - 0
Frank Wood 146 1 - 0
Ann-Marie James 176 1 - 0
Philip Purcell 163 0 - 1
Neil J Owen 184 1 - 0
James L Hanley 0 0 - 1
Dave M Davies 150 0 - 1
Frank Wood 146 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

103 = (1638 + 400 * (5 - 6)) / 12)

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