Event: Division 2 - Weston Trophy

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Opponent Rating Result
James RG Marley 171 0 - 1
Li Jiping 120 ½ - ½
Mark S Allison 168 0 - 1
Daniel Gottschalk 0 ½ - ½
David Glossop 121 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

36 = (580 + 400 * (1 - 2)) / 5)

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