Event: Derby & District Division 1

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Opponent Rating Result
Paul Williams 1665 1 - 0
Edward T Bromilow 1812 1 - 0
David Hatton 1791 1 - 0
Simon N Gilmore 2067 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2134 = (7335 + 400 * (3 - 0)) / 4)

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