Event: Hillingdon Div 1

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Opponent	Rating	Result
Martin Smith	2167	½ - ½
Pradeep Verma	1949	1 - 0
Eldar Gasanov	2531	½ - ½
Andrew Harley	2178	1 - 0
Jagdeep Dhemrait	2003	1 - 0
Daniel Knight	1738	½ - ½
Alexander Cherniaev	2423	0 - 1

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

2256 = (14989 + 400 * (3 - 1)) / 7)