Event: Div 4 - Athenaeum Cup

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Opponent	Rating	Result
Stefan Lewins	0	½ - ½
Steve Daykin	1333	½ - ½
Anthony Perry	1598	0 - 1
Hashim Tuffaha	0	½ - ½
Garry Bagshaw	0	1 - 0
Neil Ladva	1215	1 - 0
Andrew Nettleship	1557	1 - 0
Tom R W Edwards	0	1 - 0
David Hill	1375	1 - 0
Howard Cooper	1497	1 - 0

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

1058 = (8575 + 400 * (6 - 1)) / 10)