Event: NSDCA Division 1

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Opponent	Rating	Result
Alex Richardson	2028	0 - 1
Patrick Bennett	1958	0 - 1
John R Booth	1828	½ - ½
Karol Grzybowski	1805	0 - 1
Patrick Bennett	1974	½ - ½
William G Armstrong	1698	1 - 0
David Lambton	1768	0 - 1
Tim Twentyman	1702	1 - 0

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

1745 = (14761 + 400 * (2 - 4)) / 8)