Event: Roger Goldsmith Div 2

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Opponent	Rating	Result
Anthony Chan	1726	½ - ½
Michael MJ Osborn	1546	1 - 0
Alan Wadsworth	1727	0 - 1

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

1666 = (4999 + 400 * (1 - 1)) / 3)