Event: SCCA Division 2 19/20

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Opponent	Rating	Result
James Irwin	130	0 - 1
Jan Balogh	168	0 - 1
Robert R Sanders	178	0 - 1
Timothy J Wesson	138	0 - 1
James Irwin	130	½ - ½
Steve Lovell	152	1 - 0
Michael E Usher	148	0 - 1
Adrian Sanderson	110	1 - 0

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

-6 = (1154 + 400 * (2 - 5)) / 8)