Event: Div 2 - Weston Trophy

Opponent Rating Result
Andrew Butterworth 2002 ½ - ½
Ken A McIntosh 1825 ½ - ½
Carl Walker 2041 0 - 1
Daniel JS Sullivan 2010 0 - 1
Brendan Ashmore 1685 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1833 = (9563 + 400 * (1 - 2)) / 5)

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