Event: Roger Goldsmith Div 2

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Opponent Rating Result
Vikram K Banerjee 1548 0 - 1
Peter Newton 1629 0 - 1
Dan Mciver 800 0 - 1
Jake Williamson 1218 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

899 = (5195 + 400 * (0 - 4)) / 4)

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