Event: WMA Autumn League Division 2

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Opponent	Rating	Result
Neil Clarke	1866	½ - ½
Andrew N Lake	1728	1 - 0
Phil Wells	1637	1 - 0
Ray A Collett	1737	½ - ½
Steve Shaw	1600	½ - ½
James E O'Dell	1810	½ - ½
Paul Roper	1862	1 - 0
Sam J Hall	1641	0 - 1
Paul B Sharratt	1837	1 - 0
Neil Clarke	1866	0 - 1
Andrew N Lake	1728	1 - 0
Phil Wells	1637	0 - 1
Ray A Collett	1737	1 - 0
Steve Shaw	1600	1 - 0
James E O'Dell	1810	1 - 0
Paul Roper	1862	1 - 0
Sam J Hall	1641	0 - 1
Paul B Sharratt	1837	½ - ½

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

1858 = (31436 + 400 * (9 - 4)) / 18)