Event: NSDCA Division 2

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Opponent	Rating	Result
Alan M Paling	1915	½ - ½
Julian N Hawthorne	1680	½ - ½
Stephen J Emmerton	1545	1 - 0
Roger W Walker	1630	½ - ½
Kenneth J McNulty	1741	½ - ½
Charlie G Swinson	1160	1 - 0
Neill Harvey-Smith	1590	1 - 0

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

1780 = (11261 + 400 * (3 - 0)) / 7)