Event: Roger Goldsmith Div 2

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Opponent Rating Result
Daniel Pugh 1689 0 - 1
Michael MJ Osborn 1573 0 - 1
Mark S Bettley 1561 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1208 = (4823 + 400 * (0 - 3)) / 3)

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