Event: Division Two

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Opponent Rating Result
Christopher J Archer-Lock 2009 0 - 1
Stephen Briggs 1677 0 - 1
Alfredo Barquin 1752 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1679 = (5438 + 400 * (1 - 2)) / 3)

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