Event: SCCA Division 2 19/20

Opponent Rating Result
Harold Thomas 133 0 - 1
Adrian Sanderson 110 ½ - ½
Colin A Roberts 135 0 - 1
Amy John 105 ½ - ½
Harold Thomas 133 0 - 1
Carl Phillips 120 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-144 = (736 + 400 * (0 - 4)) / 6)

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