Event: SCL Div 1

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Opponent Rating Result
Erico Ferreira 0 0 - 1
Helen Archer-Lock 1665 ½ - ½
Gareth Aneurin Jones 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

288 = (1665 + 400 * (0 - 2)) / 3)

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