Event: Rapidplay League

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Opponent	Rating	Result
Neil Jerzynek	118	0 - 1
Jeff Wilson	103	½ - ½
Neil Jerzynek	118	0 - 1
Jeff Wilson	103	0 - 1
Martin Pope	129	0 - 1
Martin Pope	129	0 - 1
Steve Hutchinson	133	0 - 1
Steve Hutchinson	133	½ - ½
James Wildsmith	97	1 - 0
James Wildsmith	97	0 - 1

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

-124 = (1160 + 400 * (1 - 7)) / 10)