Event: Div3

Opponent Rating Result
Nigel D Marshall 114 0 - 1
Chris A Fraser 119 0 - 1
John E Fryer 125 ½ - ½
Peter Brace 133 ½ - ½
Douglas Bramley 103 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-121 = (594 + 400 * (0 - 3)) / 5)

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