Event: Hillingdon Div 2

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Opponent	Rating	Result
Dhairye Gauri	1678	0 - 1
Matthieu Fulhaber	1593	1 - 0
Anthony Braine	1621	0 - 1
David A Stott	1451	0 - 1
Alastair G Johnstone	1606	0 - 1
Bharath Jayakumar	1650	0 - 1
Aram Mohammed	0	0 - 1

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

1086 = (9599 + 400 * (1 - 6)) / 7)