Event: Hillingdon Div 1

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Opponent	Rating	Result
Nevil Chan	1981	0 - 1
Xavier Cowan	1916	0 - 1
Jagdeep Dhemrait	1994	0 - 1
Raghu Kamath	1857	0 - 1
Eugene Gregorio	1711	0 - 1
Roshan Amuthan	1160	1 - 0
Nigel Colter	1753	½ - ½
Russell Campbell	1779	½ - ½

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

1569 = (14151 + 400 * (1 - 5)) / 8)