Event: John Swan Trophy

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Opponent Rating Result
Andrew S Pandian 0 1 - 0
Jim McAvoy 0 1 - 0
Martin G Walker 0 0 - 1
David J Payne 0 0 - 1
Biran S Shah 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-80 = (0 + 400 * (2 - 3)) / 5)

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