Event: Division Four

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Opponent	Rating	Result
Robert J Purcell	1727	0 - 1
Victor J Brown	1577	1 - 0
Chris East	1568	½ - ½
John Grant	1620	0 - 1
Oliver Green	1656	0 - 1
Anthony Boyle	1605	0 - 1
Jamie Steward	1592	0 - 1
David M Cotterell	1534	0 - 1
Andrew Powell	1503	1 - 0
John Lunn	1558	1 - 0

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

1474 = (15940 + 400 * (3 - 6)) / 10)