Event: Division 3

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Opponent	Rating	Result
Adrian Hall	1429	0 - 1
Josh Bewsey-Holden	1500	0 - 1
Filipe Rinaldi	1234	1 - 0
Peter Jones	1200	½ - ½
Sid McDonald	1423	0 - 1
George Robinson	1412	0 - 1
Rob Davies	1329	0 - 1
William Mackintosh	1037	0 - 1
Mark Webb	1445	0 - 1

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

1068 = (12009 + 400 * (1 - 7)) / 9)