Event: Five Counties Div 2

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Opponent	Rating	Result
Robert Parsons	1708	0 - 1
Sean Morrell	1774	0 - 1
Emily Maton	1692	0 - 1
Maxim Wenninger	1683	0 - 1
Kate Walker	1647	0 - 1
Joseph Morrison	0	0 - 1
Richard Hughes	1894	0 - 1
Ron Foale	1516	0 - 1
Brian E Foster	1558	0 - 1

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

1097 = (13472 + 400 * (0 - 9)) / 9)