Event: NSDCA Division 1

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Opponent	Rating	Result
Glyn D Valentine	1641	½ - ½
William G Armstrong	1683	1 - 0
David Lambton	1792	1 - 0
Jarek Czyz	1717	0 - 1
Railton W Hyde	1748	1 - 0
James Richard Hanlon	1600	0 - 1
Jon EW Blackburn	1674	½ - ½

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

1751 = (11855 + 400 * (3 - 2)) / 7)