Event: Two East

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Opponent	Rating	Result
Justinas Stojanas	2148	½ - ½
David J Wilson	2035	0 - 1
Dmytro Nikolaienko	0	½ - ½
Jack Virgin	1885	1 - 0
George Horan	1834	0 - 1
Mark R A Murrell	1861	0 - 1
Diego Franco	0	1 - 0

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

1338 = (9763 + 400 * (2 - 3)) / 7)