Event: Roger Goldsmith Div 2

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Opponent Rating Result
Shivum Gordon-Shah 1590 1 - 0
Michael MJ Osborn 1557 1 - 0
Charles J Richmond 1590 ½ - ½
Rob Davies 1354 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1823 = (6091 + 400 * (3 - 0)) / 4)

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