Event: Derby & District Division 1

Opponent Rating Result
Edward T Bromilow 1812 ½ - ½
Andrew Robins 1791 0 - 1
Paul Madden 2114 0 - 1
Simon N Gilmore 2067 ½ - ½
Simon N Gilmore 2067 0 - 1
Alan F Downham 1848 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1750 = (11699 + 400 * (0 - 3)) / 6)

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