Event: B&DCL Div 4

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Opponent	Rating	Result
Tarik Reghif	1676	0 - 1
Kieron Roberts	1550	1 - 0(def)
Peter Austin	1638	½ - ½
David Arorash	1597	0 - 1
Michael N Davidson	1446	½ - ½
Tony Ackerman	1512	0 - 1
George A Wright	1409	0 - 1

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

1280 = (9278 + 400 * (0 - 4)) / 6)