Event: Richard Furness(500) League

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Opponent	Rating	Result
Aaron Milne	1278	0 - 1
James Ashley	1650	1 - 0
Frank Skidmore	1650	0 - 1
Daniel Robinson	1650	0 - 1
Aaron Milne	1278	0 - 1
Harry Newman	1323	0 - 1
Nick Cooke	1458	0 - 1
Frank Skidmore	1360	0 - 1

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

1156 = (11647 + 400 * (1 - 7)) / 8)