Event: Margate Rapid-Play

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Opponent	Rating	Result
Harry J Sharples	1840	0 - 1
Joseph Morris	1045	0 - 1
Peter McGill	1743	0 - 1
Peter McGill	1718	0 - 1
John L Clarke	1418	0 - 1
Joseph Morris	1469	0 - 1
Nicholas Hunt	1000	0 - 1

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

1062 = (10233 + 400 * (0 - 7)) / 7)