Event: Division 2

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Opponent	Rating	Result
Steven Mitchell	1825	0 - 1
Matthew H Shaw	1918	1 - 0
Mark R A Murrell	1809	1 - 0
Nicholas J Pelling	1686	½ - ½
Stephen L Wedlock	1929	½ - ½
Ken W Clow	1799	1 - 0
Nicholas J Pelling	1686	1 - 0
Philip Staniland	1867	0 - 1

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

1915 = (14519 + 400 * (4 - 2)) / 8)