Event: Two East

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Opponent	Rating	Result
Robert C Stern	1943	1 - 0
Carl J Hetherington	2005	1 - 0
Joao AA Santos	2013	½ - ½
Finlo N Rohrer	1968	½ - ½
Benjamin K Simpson	1863	0 - 1
Ian D Hunnable	1976	0 - 1
John H Lewin	1855	1 - 0

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

2003 = (13623 + 400 * (3 - 2)) / 7)