Event: Derby & District Division 3

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Opponent Rating Result
Sam Reed 0 0 - 1
Garry Sands 1555 0 - 1
Jenny Gartside 1182 1 - 0
Robert Frost 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

684 = (2737 + 400 * (2 - 2)) / 4)

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