Event: Leon Garfield Rapid-Play Cup

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Opponent	Rating	Result
Joseph Morris	1445	0 - 1
John L Clarke	1389	0 - 1
Colin G Gregory	1511	0 - 1
Roy F Dawson	958	1 - 0
Peter McGill	1679	0 - 1
Joseph Morris	1418	0 - 1
Keith C Findley	1903	0 - 1
Roy F Dawson	956	1 - 0

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

1207 = (11259 + 400 * (2 - 6)) / 8)