Event: Roger Goldsmith Div 2

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Opponent	Rating	Result
Laurie Pott	1792	½ - ½
Robert L Jones	1686	½ - ½
Michael MJ Osborn	1551	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1543 = (5029 + 400 * (0 - 1)) / 3)