Event: Hillingdon Div 1

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Opponent	Rating	Result
Mark Winterbotham	1892	0 - 1
David J White	1858	1 - 0
Nigel RE Alldritt	1935	0 - 1
Simon Healeas	1844	½ - ½
Colin Hughes	1805	0 - 1
Nigel Colter	1767	½ - ½
James Lyons	0	½ - ½
Stuart JM Winter	1421	1 - 0

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

1515 = (12522 + 400 * (2 - 3)) / 8)