Event: Eastman Cup

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Opponent	Rating	Result
Benjamin Portheault	1663	0 - 1
John H Hodgson	2152	0 - 1
Charles A Sturt	1632	½ - ½
John D White	1775	½ - ½
Graham P Alcock	1825	1 - 0
Gregory Shargorodsky	412	1 - 0
Kabir Pandit	1983	0 - 1
Robin W Haldane	2089	0 - 1

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

1591 = (13531 + 400 * (2 - 4)) / 8)