Event: Somerset Xmas Blitz

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Opponent Rating Result
Aarav Theja Kadiyala 0 0 - 1
Oliver Hammond 0 0 - 1
Beth Gillman 0 0 - 1
Ben Gwinnell 0 0 - 1
Bert Walker 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 5)) / 5)

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