Event: Division Four

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Opponent	Rating	Result
Peter Nixon	1435	½ - ½
Dominic P Heining	1593	0 - 1
Phil Wells	1683	0 - 1
Fred S Dickson	1615	½ - ½
John Lunn	1600	0 - 1
Mike Warden	1570	0 - 1
David J Carpenter	0	0 - 1

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

1071 = (9496 + 400 * (0 - 5)) / 7)